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Electro-optical device and electronic apparatus

An electro-optical device and current setting technology, applied in cathode ray tube indicators, static indicators, instruments, etc., can solve the problem of inability to take into account the display brightness adjustment grayscale display and other problems

Active Publication Date: 2022-06-24
SEIKO EPSON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, there is a problem that both adjustment of the display brightness according to the brightness of the environment and good gradation display cannot be achieved at the same time.

Method used

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  • Electro-optical device and electronic apparatus
  • Electro-optical device and electronic apparatus
  • Electro-optical device and electronic apparatus

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Embodiment Construction

[0028] Hereinafter, preferred embodiments of the present disclosure will be described in detail. In addition, the present embodiment described below does not unduly limit the contents described in the claims, and all the configurations described in the present embodiment are not necessarily all essential components.

[0029] 1. About the adjustment of the display brightness according to the brightness of the environment

[0030] As described above, in a head-mounted display, a head-up display, or the like, there are cases where it is desired to adjust the display brightness according to the brightness of the environment. Taking analog driving and digital driving as examples, the subject of display brightness adjustment will be described.

[0031] figure 1 It is a figure explaining the display brightness adjustment in the case of performing display by analog drive. In analog driving, the pixel circuit causes a drive current corresponding to a grayscale value to flow through ...

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PUM

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Abstract

The invention provides an electro-optical device and an electronic apparatus, which can give consideration to display brightness adjustment corresponding to the brightness of the environment and good gradation display. An electro-optical device (15) includes a plurality of digital scan lines, a plurality of analog scan lines, a digital signal line, an analog signal line, and a plurality of pixel circuits (30). Each pixel circuit (30) includes a light emitting element (31), a digital drive circuit (36), and an analog drive circuit (35). The digital drive circuit (36) performs digital drive in which the drive current is supplied to the light-emitting element (31) for a period of length corresponding to the gradation value. The analog drive circuit (35) performs analog current setting for setting the current value of the drive current on the basis of the analog data voltage. The pixel circuit (30) connected to the t-th digital scanning line and the t-th analog scanning line is digitally driven while the pixel circuit (30) connected to the s-th digital scanning line and the s-th analog scanning line performs analog current setting.

Description

technical field [0001] The present invention relates to electro-optical devices, electronic equipment, and the like. Background technique [0002] Patent Documents 1 and 2 disclose a method of performing grayscale display as a time average by weighting the time of pixel light emission corresponding to each bit of display data in a display device using a light-emitting element for a pixel. In addition, Patent Documents 1 and 2 disclose a method of setting a first bit for a pixel electrically connected to each scanning line while selecting a plurality of scanning lines one by one from the top, and then similarly from the top From then on, a plurality of scan lines are selected one by one, and the second bit is set to the pixel electrically connected to each scan line, and this continues until the MSB. [0003] Patent Document 1: Japanese Patent Laid-Open No. 2019-132941 [0004] Patent Document 2: Japanese Patent Laid-Open No. 2008-281827 [0005] In a head-mounted display,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/3208G09G3/3266G09G3/32
CPCG09G3/3208G09G3/3266G09G3/32G09G2360/144G09G2320/0271G09G3/2033G09G3/2022G09G5/10G09G2300/0857G09G2230/00G09G2370/08G09G3/3233G09G2310/0213G09G2310/08G09G2300/0852G09G2320/0247G09G2300/0842
Inventor 百濑洋一宫坂光敏
Owner SEIKO EPSON CORP