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Display apparatus, light detection method and electronic apparatus

A display device and light detection technology, applied in static indicators, instruments, etc., can solve problems such as degradation of luminous brightness, degradation of luminous efficiency of organic EL elements, reduction of brightness in display window mode, etc., and achieve the effect of increasing productivity

Active Publication Date: 2011-07-13
JOLED INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The luminous efficiency of organic EL elements deteriorates over time
In particular, even if the same current is passed, the luminance of light emission deteriorates with the passage of time
[0007] As a result, screen burn, if a white window (WINDOW) mode is displayed on a black background, then e.g. Figure 31A Show white on full screen as shown in , show windowed mode parts with reduced brightness

Method used

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  • Display apparatus, light detection method and electronic apparatus
  • Display apparatus, light detection method and electronic apparatus
  • Display apparatus, light detection method and electronic apparatus

Examples

Experimental program
Comparison scheme
Effect test

no. 1 approach

[0062] [3-1. Circuit configuration]

[0063] [3-2. Light detection operation example A]

[0064] [3-3. Light detection operation example B]

[0065] [3-4. Light detection operation example C]

[0066] [3-5. Light detection operation period]

no. 2 approach

[0068] [4-1. Circuit configuration]

[0069] [4-2. Light detection operation]

[0070] [4-3. Modification of the second embodiment]

no. 3 approach

[0072]

[0073]

[0074] exist figure 1 The configuration of the organic EL display device according to the first embodiment of the present invention is shown in . Organic EL display devices are incorporated in various electronic devices as display devices. Specifically, for example, organic EL display devices are incorporated in various electronic devices such as television receivers, monitor devices, recording and reproduction devices, communication devices, computer devices, audio devices, video devices, game machines, and home appliance devices .

[0075] The organic EL display device includes a plurality of pixel circuits 10 each including an organic EL element as a light emitting element for performing light emission driving according to an active matrix method.

[0076] refer to figure 1 , the organic EL display device includes a pixel array 20 in which a large number of pixel circuits 10 are arranged in a matrix in a row direction and a column direction. It s...

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Abstract

The invention discloses a display apparatus, a light detection method and an electronic apparatus. The display apparatus includes a plurality of pixel circuits, a displaying driving section, and a light amount information detection section. The pixel circuits are disposed in a matrix at positions at which a signal line and a plurality of scanning lines cross with each other. The displaying driving section applies a signal value to each pixel circuit and drives the scanning lines to cause the pixel circuit to emit light with a luminance according to the signal value to carry out image display. The light amount information detection section detects light amount information. Each pixel circuit includes a light emitting element, a driving transistor, a sampling transistor, and a switching transistor. Each pixel circuit can execute light detection operation of varying the gate potential of the driving transistor in response to a received light amount and outputting the source potential of the driving transistor.

Description

technical field [0001] The present invention relates to, for example, a display device using a self-luminous device such as an organic electroluminescence element (organic EL element) in a pixel circuit, a photodetection method and an electronic device for a photodetector provided in the pixel circuit. Background technique [0002] In an active matrix type display device using an organic electroluminescence (EL: electroluminescence) light-emitting element as a pixel, the current flowing to the light-emitting element in each pixel circuit is controlled by an active element, and a thin-film A transistor (TFT) is provided in each pixel circuit. Since the organic EL element is a current light-emitting element, the gradation of color development is obtained by controlling the amount of current flowing to the EL element. [0003] In particular, in a pixel circuit including an organic EL element, a current corresponding to an applied signal value voltage is supplied to the organic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/32
CPCG09G2360/147G09G2320/0295G09G3/3233G09G2320/045G09G2320/043G09G2300/0866G09G2300/0842G09G2300/0819G09G2300/0465
Inventor 山本哲郎内野胜秀
Owner JOLED INC
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