US 2022/0189385 A1Published application

Display device

AssigneeKYOCERA Corporation

InventorTakanobu SUZUKI

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Abstract

A display device includes a data signal line, a low-tone scanning line, a high-tone scanning line, a low-tone emission control line, a high-tone emission control line, a signal line drive circuit that outputs an image signal to the data signal line, a scanning line drive circuit that outputs a selection signal to the low-tone scanning line and to the high-tone scanning line, and first and second power supply lines that receive power from a power supply. Pixel units each include a low-tone scanning transistor, a high-tone scanning transistor, a low-tone capacitor, a high-tone capacitor, a low-tone drive transistor, a high-tone drive transistor, a low-tone emission control transistor, a high-tone emission control transistor, and a light emitter. The display device drives the light emitter by dividing a high tone and a low tone in time series.

Claims19

Dependent claims

A display device comprising:

a plurality of pixel units arranged in a matrix of rows and columns, each of the plurality of pixel units including a light emitter, the light emitter being configured to emit light with a luminance level changeable in response to a level of a current, and a pixel circuit, the pixel circuit being configured to cause the light emitter to emit light with a luminance level corresponding to a tone resulting from an image signal,
wherein the pixel circuit includes
a low-tone driver configured to drive the light emitter in response to a tone resulting from an image signal being within a low-tone range of tones below or equal to a predetermined tone, and not to drive the light emitter in response to a tone resulting from an image signal being within a high-tone range of tones above the predetermined tone, and
a high-tone driver configured not to drive the light emitter in response to a tone resulting from an image signal being within the low-tone range, and to drive the light emitter in response to a tone resulting from an image signal being within the high-tone range.

1 more element

Dependencies are inferred from the claim text.

Facts

Application: 17/631,159Filed 6 Jul 2020
Priority: JP 2019-14151931 Jul 2019
Published: 16 Jun 2022
Term ends: Not estimatedThe source records don’t support an estimate.

Classification14 codes

G09G 3/3233
Using an active matrix: with pixel circuitry controlling the current through the light-emitting element
G09F 9/00
Indicating arrangements for variable information in which the information is built-up on
G09F 9/30
Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual…
G09G 3/2081
By a combination of two or more gradation control methods: with combination of amplitude modulation and time modulation