Photo sensor and portable electronic apparatus

a technology of electronic equipment and photosensor, which is applied in the field of photosensors, can solve the problems that the source/drain metal layer cannot be successfully fabricated without the semiconductor layer, and achieve the effect of good photosensitivity

Inactive Publication Date: 2010-02-18
CHUNGHWA PICTURE TUBES LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This design improves the electric field intensity and photocurrent generation, allowing for effective integration onto LCD panels and adjustable brightness levels in portable electronic devices, enhancing display quality.

Problems solved by technology

In other words, during the standard 5-mask fabrication process, the Ohmic contact layer (doped semiconductor layer) cannot be successfully fabricated without the source / drain metal layer.

Method used

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  • Photo sensor and portable electronic apparatus
  • Photo sensor and portable electronic apparatus
  • Photo sensor and portable electronic apparatus

Examples

Experimental program
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Effect test

first embodiment

[0029]FIG. 2A is a top view of a photo sensor according to a first embodiment of the present invention, and FIG. 2B is cross sectional view along a section line A-A′ of FIG. 2A. For simplicity, the first insulator, the second insulator and the third insulator are not illustrated in FIG. 2A, though these film layers are clearly illustrated in FIG. 2B. Referring to FIG. 2A and FIG. 2B, the photo sensor 200 of the present invention is disposed on a substrate 201, and the substrate 201 is for example, an active device array substrate. Generally, the active device array substrate is used together with a color filter substrate for fabricating a display panel. Certainly, a type of the substrate 201 can be changed according to an actual requirement, which is not limited by the embodiment.

[0030]As shown in FIG. 2B, the photo sensor 200 includes a gate 202g, a first insulator 202i, a semiconductor layer 202c, a first electrode pattern layer 202s, a second electrode pattern layer 202d, a secon...

second embodiment

[0036]FIG. 3A is a schematic diagram illustrating a portable electronic apparatus according to a second embodiment of the present invention. FIG. 3B is flowchart illustrating an operation of the portable electronic apparatus according to the second embodiment. Referring to FIG. 3A and FIG. 3B, the portable electronic apparatus 400 of the present invention includes a plurality of photo sensors 200 and a display screen 300. The photo sensors 200 surround the display screen 300 for detecting the external light. Particularly, a connection approach of the photo sensors 200 avails improvement of intensity of an output signal. As shown in FIG. 4A, the first electrode pattern layers 202s of the photo sensors 200 can be electrically connected to each other, the second electrode pattern layers 202d can be electrically connected to each other, and the gates 202g can also be electrically connected to each other. In the actual application, the gates 202g are commonly connected to a voltage Vg of...

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Abstract

A photo sensor including a gate, a first insulator, a semiconductor layer, a first electrode pattern layer, a second electrode pattern layer, a second insulator and a transparent electrode is provided. The gate is disposed on the substrate. The first insulator covers the gate and a portion of the substrate. The semiconductor layer is disposed on the first insulator above the gate. Moreover, there is a space between the first electrode pattern layer and the second electrode pattern layer located on the semiconductor layer. The second insulator covers a portion of the semiconductor layer, the first electrode pattern layer and the second electrode pattern layer. The transparent electrode is disposed on the second insulator above the semiconductor layer and corresponds to the first electrode pattern layer. The transparent electrode is electrically connected to the first electrode pattern layer, and a portion of the transparent electrode is within the space.

Description

CROSS-REFERENCE TO RELATED APPLICATION[0001]This application claims the priority benefit of Taiwan application serial no. 97130699, filed on Aug. 12, 2008. The entirety of the above-mentioned patent application is hereby incorporated by reference herein and made a part of specification.BACKGROUND OF THE INVENTION[0002]1. Field of the Invention[0003]The present invention relates to a photo sensor. More particularly, the present invention relates to a photo sensor of a portable electronic apparatus.[0004]2. Description of Related Art[0005]FIG. 1 is a cross-sectional view of a conventional photo sensor. Referring to FIG. 1, the conventional photo sensor 100 includes a substrate 101, a metal electrode 102, a semiconductor layer 104, a doped semiconductor layer 106 and a transparent electrode 108. Wherein, the metal electrode 102 is disposed on the substrate 101. Moreover, the semiconductor layer 104 and the doped semiconductor layer 106 are disposed between the metal electrode 102 and t...

Claims

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Application Information

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Patent Type & AuthorityApplications(United States)
IPC IPC(8): H01L31/12H01L31/02G01J1/32
CPCH01L31/1136H01L27/14692
InventorLIOU, MENG-CHI
OwnerCHUNGHWA PICTURE TUBES LTD