US 11,238,799 B2Granted

Display panel and display device

AssigneeWuhan Tianma Micro-Electronics Co., Ltd.

InventorsShucheng Ge, Guofeng Zhang, Junqiang Wang, Yong Yuan

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Abstract

A display panel includes a first display region and a second display region; the first display region includes first sub-pixels provided with first pixel density; and the second display region includes second sub-pixels provided with second pixel density, where the first pixel density is lower than the second pixel density. During one frame of picture display, a light-emitting phase of the first sub-pixel includes a first light-emitting period, and a light-emitting phase of the second sub-pixel includes a second light-emitting period; for same target brightness, the first sub-pixel emits light with first light-emitting brightness in the first light-emitting period, and the second sub-pixel emits light with second light-emitting brightness in the second light-emitting period, where the first light-emitting brightness is higher than the second light-emitting brightness; and the first light-emitting period is shorter than the second light-emitting period.

Claims20

Dependent claims

A display panel, comprising a first display region and a second display region, wherein the first display region is reused as a sensor setting region;

wherein the first display region comprises a plurality of first sub-pixels which are provided with first pixel density;
wherein the second display region comprises a plurality of second sub-pixels which are provided with second pixel density;
wherein the first pixel density is lower than the second pixel density;
wherein in duration of one frame of display picture, a light-emitting phase of the plurality of first sub-pixels comprises a first light-emitting period, and a light-emitting phase of the plurality of second sub-pixels comprises a second light-emitting period;
wherein for same target brightness, the plurality of first sub-pixels is configured to emit light with first light-emitting brightness during the first light-emitting period, and the plurality of second sub-pixels is configured to emit light with second light-emitting brightness during the second light-emitting period;
and
wherein the first light-emitting brightness L1 and the second light-emitting brightness L2 satisfy that L1>L2, and the first light-emitting period T1 and the second light-emitting period T2 satisfy that T1<T2.

4 more elements

A display device, comprising a display panel;

wherein the display panel comprises a first display region and a second display region, wherein the first display region is reused as a sensor setting region;
wherein the first display region comprises a plurality of first sub-pixels which are provided with first pixel density;
wherein the second display region comprises a plurality of second sub-pixels which are provided with second pixel density;
wherein the first pixel density is lower than the second pixel density;
wherein in duration of one frame of display picture, a light-emitting phase of the plurality of first sub-pixels comprises a first light-emitting period, and a light-emitting phase of the plurality of second sub-pixels comprises a second light-emitting period;
wherein for same target brightness, the plurality of first sub-pixels is configured to emit light with first light-emitting brightness during the first light-emitting period, and the plurality of second sub-pixels is configured to emit light with second light-emitting brightness during the second light-emitting period;
and
wherein the first light-emitting brightness L1 and the second light-emitting brightness L2 satisfy that L1>L2, and the first light-emitting period T1 and the second light-emitting period T2 satisfy that T1<T2.

5 more elements

Dependencies are inferred from the claim text.

Facts

Application: 16/728,892Filed 27 Dec 2019
Priority: CN 201910936255.129 Sep 2019
Published: US 2021/0097936 A11 Apr 2021
Granted: 1 Feb 2022
Term ends: Not estimatedThe source records don’t support an estimate.

Classification11 codes

G09G 3/3233
Using an active matrix: with pixel circuitry controlling the current through the light-emitting element
G09G 3/3258
Using an active matrix: with pixel circuitry controlling the voltage across the light-emitting element
G09G 3/2011
Display of intermediate tones: by amplitude modulation
G09G 3/2014
Display of intermediate tones: by modulation of the duration of a single pulse during which the logic level remains constant