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US 6,208,467 B1Granted
Display apparatus for displaying an image having gradation
AssigneeHitachi, Ltd.
InventorsKazutaka Naka, Michitaka Ohsawa, Akihiko Kougami, Hiroshi Ohtaka
Life of this patent
Estimating the term…
Abstract
A display apparatus for displaying an image having gradation represented by subfields. The display apparatus includes a display panel, a circuit for outputting information in which a plurality of subfields in one field period is arranged so as to have first plural array portions where allotted light emitting weights increase gradually and second plural array portions where allotted light emitting weights decrease gradually, and a driver for forming a drive signal based on the information and for outputting the drive signal to the display panel.
Claims29
A display apparatus for displaying an image having gradation represented by subfields comprising:
- a display panel;
- a circuit for outputting information in which a plurality of subfields in one field period is arranged so as to have first plural array portions where allotted light emitting weights increase gradually and second plural array portions where allotted light emitting weights decrease gradually;
- and
- a driver for forming a drive signal based on said information and for outputting said drive signal to said display panel.
1 more element
A display apparatus for displaying an image having gradation represented by subfields comprising:
- a display panel;
- a circuit for outputting information in which a plurality of subfields in one field period is arranged so as to have first plural array portions where allotted light emitting weights increase gradually and second plural array portions where allotted light emitting weights decrease gradually, both of said first and second plural array portions being arranged alternatively;
- and
- a driver for forming a drive signal based on said information and for outputting said drive signal to said display panel.
1 more element
A display apparatus for displaying an image having gradation represented by subfields comprising:
- a display panel;
- a circuit for outputting information in which a plurality of subfields in one field period having plural subfields allotted light emitting weights equal to each other is arranged so as to have plural groups having first plural array portions where allotted light emitting weights increase gradually and second plural array portions where allotted light emitting weights decrease gradually, and said subfields having light emitting weights equal to each other are allotted to said groups;
- and
- a driver for forming a drive signal based on said information and for outputting said drive signal to said display panel.
1 more element
A display apparatus for displaying an image having gradation represented by subfields comprising:
- a display panel;
- a circuit for outputting information in which a plurality of subfields in one field is arranged so as to have first plural array portions where allotted light emitting weights increase gradually and second plural array portions where allotted light emitting weights decrease gradually, both of said first and second plural array portions being arranged alternatively, and a maximum light emitting weight is included in said first plural array portions and said second plural array portions;
- and
- a driver for forming a drive signal based on said information and for outputting said drive signal to said display panel.
1 more element
A display apparatus for displaying an image having gradation represented by subfields comprising:
- a display panel;
- a circuit for outputting information in which light emitting weights [N], [2·N], [3·N], . . . , [(K−1)·N], [K·N], [(K−1)·N], . . . , [2·N], [N] (K, N:natural numbers), where K is a natural number of at least 3) are arranged so as to be allotted to 2·K−1 subfields including a maximum light emitting weight among a plurality of subfields in one field period;
- and
- a driver for forming a drive signal based on said information and for outputting said drive signal to said display panel.
1 more element
A display apparatus for displaying an image having gradation represented by subfields comprising:
- a display panel;
- a circuit for outputting information in which a plurality of subfields in one field period is arranged so as to have first plural array portions where allotted light emitting weights increase gradually and second plural array portions where allotted light emitting weights decrease gradually, and in which light emitting weights [N], [2·N], [3·N], . . . , [(K−1) N], [K·N], [(K−1) N], . . . , [2·N], [N] (K, N:natural numbers, where K is a natural number of at least 3) are arranged so as to be allotted to 2·K−1 subfields including a maximum light emitting weight among a plurality of subfields in one field period;
- and
- a driver for forming a drive signal based on said information and for outputting said drive signal to said display panel.
1 more element
A display apparatus for displaying an image having gradation represented by subfields comprising:
- a display panel;
- a circuit for outputting information in which total light emitting weights of subfields controlled on/off of light emission simultaneously in one field period are light emitting weights [N], [2·N], [3·N], . . . , [(K−1)·N], [K·N], [(K−1)·N], . . . , [2·N], [N] (K, N:natural numbers, where K is a natural number of at least 3);
- and
- a driver for forming a drive signal based on said information and for outputting said drive signal to said display panel.
1 more element
A display apparatus for displaying an image having gradation represented by subfields comprising:
- a display panel;
- a circuit for outputting information in which a plurality of subfields in one field period is arranged so as to have plural array portions where allotted light emitting weights decrease gradually, and in which total light emitting weights of said subfields controlled on/off of light emission simultaneously is arranged so as to have light emitting weights [N], [2 N], [3 N], [(K−1)·N], [K·N], [(K−1)·N], . . . , [2·N], [N] (K, N:natural numbers, where K is a natural number of at least 3);
- and
- a driver for forming a drive signal based on said information and for outputting said drive signal to said display panel.
1 more element
A display apparatus for displaying an image having gradation represented by subfields comprising:
- a display panel;
- a circuit for outputting information in which a plurality of subfields in one field period is arranged such that light emitting weights [N], [2 N], [3 N], [(K−1)·N], [K·N], [(K−1)·N], . . . , [2·N], [N] (K, N:natural numbers, where K is a natural number of at least 3) are arranged to 2·K−1 subfields including a maximum light emitting weight;
- a first light emitting circuit for performing light emission in said respective subfields in the first order;
- a second light emitting circuit for performing light emission in said respective subfields in the second order different from said first order;
- and
- switching circuit for switching said first and second light emitting circuits by a predetermined period.
3 more elements
A display apparatus for displaying an image having gradation represented by subfields comprising:
- a display panel;
- a circuit for outputting information in which a plurality of subfields in one field period is arranged so as to have first plural array portions where allotted light emitting weights increases gradually and second plural array portions where allotted light emitting weights decreases gradually, and in which light emitting weights [N], [2 N], [3 N], [(K−1)·N], [K·N], [(K−1)·N], . . . , [2·N], [N] (K, N:natural numbers, where K is a natural number of at least 3) is arranged so as to be allotted to 2·K−1 subfields including subfields having a maximum light emitting weight;
- a driver for forming a drive signal based on said information and for outputting said drive signal to said display panel;
- first light emitting circuit for performing light emission in said respective subfields in the first order;
- second light emitting circuit for performing light emission in said respective subfields in the second order different from said first order;
- and
- switching circuit for switching said first and second light emitting circuits by a predetermined period.
4 more elements
A display apparatus for displaying an image having gradation represented by subfields comprising:
- a display panel;
- a circuit for outputting information in which total light emitting weights of subfields among a plurality of subfields in one field and controlled on/off of light emitting weights [N], [2 N], [3 N], [(K−1)·N], [K·N], [(K−1)·N], . . . , [2·N], [N] (K, N:natural numbers), where K is a natural number of at least 3);
- and
- a driver for forming a drive signal based on said information and for outputting said drive signal to said display panel;
- first light emitting circuit for performing light emission in said respective subfields in the first order;
- second light emitting circuit for performing light emission in said respective subfields in the second order different from said first order;
- and
- switching circuit for switching said first and second light emitting circuits by a predetermined period.
5 more elements
A display apparatus for displaying an image having gradation represented by subfields comprising:
- a display panel;
- a circuit for outputting information in which a plurality of subfields in one field period is arranged so as to have first plural array portions where allotted light emitting weights increase gradually and second plural array portions where allotted light emitting weights decrease gradually, and in which total light emitting weights of said subfields controlled on/off of light emission simultaneously is arranged so as to have light emitting weights [N], [2 N], [3 N], [(K−1)·N], [K·N], [(K−1)·N], . . . , [2·N], [N] (K, N:natural numbers, where K is a natural number of at least 3);
- and
- a driver for forming a drive signal based on said information and for outputting said drive signal to said display panel;
- first light emitting circuit for performing light emission in said respective subfields in the first order;
- second light emitting circuit for performing light emission in said respective subfields in the second order different from said first order;
- and
- switching circuit for switching said first and second light emitting circuits by a predetermined period.
5 more elements
A display apparatus for displaying an image having gradation represented by subfields comprising:
- a display panel;
- a circuit for outputting information in which a plurality of subfields in one field period is arranged such that light emitting weights [N], [2 N], [3 N], [(K−1)·N], [K·N], [(K−1)·N], . . . , [2·N], [N] (K, N:natural numbers, where K is a natural number of at least 3) are allotted to 2·K−1 subfields including a maximum light emitting weight;
- a driver for forming a drive signal based on said information and for outputting said drive signal to said display panel;
- first light emitting circuit for performing light emission in said respective subfields in the first order;
- second light emitting circuit for performing light emission in said respective subfields in the second order different from said first order;
- and
- changing means for changing said first and second light emitting circuits by a predetermined period.
4 more elements
A display apparatus for displaying an image having gradation represented by subfields comprising:
- a display panel;
- a circuit for outputting information in which a plurality of subfields in one field period is arranged so as to have first plural array portions where allotted light emitting weights increase gradually and second plural array portions where allotted light emitting weights decreases gradually, and in which light emitting weights [N], [2 N], [3 N], [(K−1)·N], [K·N], [(K−1)·N], . . . , [2·N], [N] (K, N:natural numbers, where K is a natural number of at least 3) are arranged so as to be allotted to 2·K−1 subfields including subfields having a maximum light emitting weight;
- a driver for forming a drive signal based on said information and for outputting said drive signal to said display panel;
- first light emitting circuit for performing light emission in said respective subfields in the first order;
- second light emitting circuit for performing light emission in said respective subfields in the second order different from said first order;
- and
- changing means for changing said first and second light emitting circuits by a predetermined period.
4 more elements
A display apparatus for displaying an image having gradation represented by subfields comprising:
- a display panel;
- a circuit for outputting information in which total light emitting weights of subfields among a plurality of subfields in one field period and controlled on/off of light emission simultaneously are light emitting weights [N], [2 N], [3 N], [(K−1)·N], [K·N], [(K−1)·N], . . . , [2·N],[N] (K, N:natural numbers, where K is a natural number of at least 3);
- and
- a driver for forming a drive signal based on said information and for outputting said drive signal to said display panel;
- first light emitting circuit for performing light emission in said respective subfields in the first order;
- second light emitting circuit for performing light emission in said respective subfields in the second order different from said first order;
- and
- changing means for changing said first and second light emitting circuits by a predetermined period.
5 more elements
A display apparatus for displaying an image having gradation represented by subfields comprising:
- a display panel;
- a circuit for outputting information in which a plurality of subfields in one field period is arranged so as to have first plural array portions where allotted light emitting weights increase gradually and second plural array portions where allotted light emitting weights decrease gradually, and in which total light emitting weights [N], [2 N], [3 N], [(K−1)·N], [K·N], [(K−1)·N], . . . , [2·N], [N] (K, N:natural numbers, where K is a natural number of at least 3);
- and
- a driver for forming a drive signal based on said information and for outputting said drive signal to said display panel;
- first light emitting circuit for performing light emission in said respective subfields in the first order;
- second light emitting circuit for performing light emission in said respective subfields in the second order different from said first order;
- and
- changing means for changing said first and second light emitting circuits by a predetermined period.
5 more elements
Dependencies are inferred from the claim text.