# US 8,542,167 B2 · Projection type display apparatus

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- Number: US 8,542,167 B2
- Document ID: US8542167B2
- Status: Granted
- Kind: B2
- Application number: 11/832,419
- Filed: 2007-08-01
- Published: 2009-02-05
- Granted: 2013-09-24
- Earliest claimed: 2007-08-01
- Assignees: Himax Technologies Limited
- Applicants: Yu-Wen Chiou; Biing-Seng Wu; Lin-Kai Bu
- Inventors: Yu-Wen Chiou; Biing-Seng Wu; Lin-Kai Bu
- Web page: https://patentgrep.com/patent/US8542167B2

## CPC

- G09G 3/34: by control of light from an independent source
- G03B 21/2013: {Plural light sources}
- G03B 21/2033: {LED or laser light sources}
- H04N 9/3132: {using one-dimensional electronic spatial light modulators}
- H04N 9/3138: {using arrays of modulated light sources (electroluminescent display devices G09G3/30)}
- G03B 33/06: by additive-colour projection apparatus
- G09G 3/3208: organic, e.g. using organic light-emitting diodes [OLED]
- G09G: ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION (arrangements for transferring data between digital computers and displays G06F3/14; static indicating arrangements comprising an association of a number of separate sources or light control cells G09F9/00; static indicating arrangements comprising integral associations of a number of light sources H01J, H01K, H10H, H05B33/12; scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission, details thereof H04N1/00)
- G03B: APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR (optical parts of such apparatus G02B; photosensitive materials or processes for photographic purposes G03C; apparatus for processing exposed photographic materials G03D)
- H04N: PICTORIAL COMMUNICATION, e.g. TELEVISION

## Abstract

A display apparatus has several light emitting elements and several lenses. The light emitting elements generate light of a first and second part of a frame respectively during a first and second period. The lenses pass through by the light from the light emitting elements, and operate to form images of the first and second part of the frame at a first and second location during the first and second period, respectively.

## Claims

### Claim 1

A display apparatus, comprising:
a plurality of light emitting elements for generating light of first and second lines of a frame respectively during first and second periods; and
a plurality of lenses arranged in a single line, through which the light generated by the light emitting elements directly passes, the lenses configured to
project the light at a first location during the first period to form an image of the first line of the frame, and
project the light at a second location during the second period to form an image of the second line of the frame,
wherein the light emitting elements comprise red, green, and blue light emitting elements,
wherein the image of the first line of the frame and the image of the second line of the frame formed by the lenses overlap with each other,
wherein the red, green and blue light emitting elements are respectively arranged in three different rows,
wherein the red light emitting elements are arranged in a first row, the green light emitting elements are arranged in a second row, and the blue light emitting elements are arranged in a third row,
wherein the image of the first line of the frame is formed by light from the first row and the second row of the light emitting elements at the first location during the first period,
wherein the image of the second line of the frame is formed by light from the second row and the third row of the light emitting elements at the second location during the second period, and
wherein the first location and the second location are the same location.

### Claim 2 (depends on 1)

The display apparatus as claimed in claim 1, wherein the light emitting elements are organic light emitting diodes.

### Claim 3 (depends on 1)

The display apparatus as claimed in claim 1, wherein the image of the second line of the frame during the second period is configured to completely cover the image of the first line of the frame during the first period.