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Display device and electronic apparatus including display device

A display device and circuit technology, applied in static indicators, nonlinear optics, instruments, etc., can solve problems such as the influence of light sensors, the difficulty of driving circuits to configure light sensors, and the decrease in the accuracy of light sensors

Inactive Publication Date: 2008-11-12
JAPAN DISPLAY INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] From the viewpoint of the accuracy of illuminance measurement and design, it is preferable to install the photosensor close to the display area of ​​the display device, but it is difficult to arrange the photosensor inside the driver circuit in the liquid crystal display device with built-in driver circuit.
Moreover, in the case of such an arrangement, the optical sensor is easily affected by the electrical noise driven by the display area, and the influence of stray light from the display area cannot be ignored, so there is a problem that the accuracy of the optical sensor decreases. This problem is particularly noticeable in the case of common potential inversion drive in the device

Method used

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  • Display device and electronic apparatus including display device
  • Display device and electronic apparatus including display device
  • Display device and electronic apparatus including display device

Examples

Experimental program
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no. 1 Embodiment approach

[0041] FIG. 1 is a perspective structural view (partial sectional view) of a liquid crystal display device 910 of this embodiment. The liquid crystal display device 910 is configured such that the active matrix substrate 101 and the counter substrate 912 are bonded together at a constant interval through a sealing material 923 , and a nematic liquid crystal material 922 is sandwiched between them. An alignment material made of polyimide or the like is coated on the active matrix substrate 101 and rubbed to form an alignment film (not shown). In addition, the opposite substrate 912 is formed with: a color filter (not shown) corresponding to the pixel, a black matrix 940 made of low-reflection and low-transmittance resin for preventing light leakage and improving contrast, and a The counter electrode 930 formed of an ITO film and used as a common electrode short-circuits the counter conductive portion 330 ( 330 - 1 , 330 - 2 ) on the source matrix substrate 101 . Coating an ali...

no. 2 Embodiment approach

[0086] FIG. 16 is an enlarged plan view of the nth first edge light sensor 351-n as one sensor in the first edge light sensor group in the second embodiment, corresponding to FIG. 8 of the first embodiment. legend with Figure 5 same. Hereinafter, FIG. 16 will be described focusing on differences from FIG. 8 .

[0087] In Fig. 16, different from Fig. 8, the scanning line 201-n is formed of a wiring formed by an aluminum neodymium alloy film (AlNd) through a contact hole in the region overlapping with the light-shielding electrode 611-n in plan view, and the scanning line 201-n is connected to the light-shielding electrode 611-n. A common potential branch wiring 618-n made of a molybdenum thin film (Mo) is formed between the electrodes 611-n. The common potential branch wiring 618-n is connected to the common potential wiring 335 through a contact hole, and is supplied with a common potential (COM). In other respects, FIG. 16 is not different from FIG. 8 , so the same refere...

no. 3 Embodiment approach

[0094] Figure 18 is a block diagram of the active matrix substrate 102 in the third embodiment, and the following is the same as that shown in the first embodiment figure 2 The difference between the active matrix substrate 101 and the first embodiment will be described. figure 2The same components are assigned the same symbols and their descriptions are omitted. In this embodiment, instead of the first edge light sensors 351-1 to 351-480 in the first embodiment, the first edge light sensors 351'-1 to 351'-480 as light sensors are arranged to replace the second edge light sensors. Sensors 352-1 to 352-1920 are equipped with second edge light sensors 352'-1 to 352'-1920 as light sensors, and third edge light sensors as light sensors are arranged instead of third edge light sensors 353-1 to 353-480 Sensors 353'-1 to 353'-480, instead of the fourth side light sensors 354-1 to 354-1920, the fourth side light sensors 354'-1 to 354'-1920 as light sensors are arranged as light sen...

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Abstract

A display device includes an active matrix circuit for display, a plurality of bus lines which are connected to the active matrix circuit and which are used to transmit driving signals, driving circuits which supply the driving signals to the plurality of bus lines, the plurality of bus lines and the driving circuits being arranged on a substrate, and optical sensors arranged on the substrate. The optical sensors are arranged in a plurality of sub regions separated using the plurality of bus lines. The plurality of sub regions are arranged between the active matrix circuit and each of the driving circuits.

Description

technical field [0001] The present invention relates to, for example, a display device and electronic equipment including the display device. Background technique [0002] In recent years, a technology for mounting a photosensor function on a display device, especially a liquid crystal display device using a thin film transistor has been developed (for example, Patent Document 1). There are three purposes for installing an optical sensor: (1) to reduce power consumption and improve image quality by measuring external light and then adjusting brightness, etc.; Adjustment; (3) Discriminate the position of the finger and the light pen and use it as a touch key. Examples of photosensors include thin film transistors, PIN (p-intrinsic-n, p-intrinsic-n) diodes, PN diodes, and the like. In any case, the photosensitive portion is a silicon thin film, and it is preferably manufactured in the same manufacturing process as the silicon thin film constituting the switching element of t...

Claims

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Application Information

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IPC IPC(8): G02F1/1362G02F1/13
CPCG02F1/0327G02F1/1343G02F1/136286G09G3/3655
Inventor 小桥裕
Owner JAPAN DISPLAY INC
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