Display device with light receiving element under transparent spacer and manufacturing method therefor
First Claim
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1. A display device comprising:
- a display section comprising;
a first portion of a first substrate;
a first portion of an insulating layer over the first portion of the first substrate;
a liquid crystal element over the first portion of the insulating layer; and
a first portion of a second substrate over the liquid crystal element, and a sensor section comprising;
a second portion of the first substrate;
a light receiving element over the second portion of the first substrate;
a second portion of the insulating layer over the light receiving element; and
a spacer over the second portion of the insulating layer,wherein the liquid crystal element comprises a first electrode, a liquid crystal layer over the first electrode, and a second electrode over the liquid crystal layer,wherein the liquid crystal layer comprises a liquid crystal and a polymer,wherein the liquid crystal is dispersed in the polymer,wherein the spacer is capable of transmitting a light,wherein the spacer and the light receiving element are overlapped with each other,wherein the spacer comprises a region where the spacer and the liquid crystal layer are not overlapped with each other in a direction normal to a surface of the first substrate, andwherein the liquid crystal layer is in contact with a side surface of the spacer.
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Abstract
An object is to provide a display device which has high visibility and has a touch recognition function with a high degree of accuracy, by combining a liquid crystal layer where liquid crystals are dispersed in a polymer and a light emitting element. In a display device using a liquid crystal layer where liquid crystals are dispersed in a polymer, a light-transmitting spacer is provided so as to overlap with a light receiving element which has a touch recognition function. The light-transmitting spacer can prevent light incident on the light receiving element from being dispersed by the liquid crystals, while maintaining a cell gap in the liquid crystal layer, and thus achieve a touch recognition function with a high degree of accuracy with high visibility.
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Citations
16 Claims
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1. A display device comprising:
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a display section comprising; a first portion of a first substrate; a first portion of an insulating layer over the first portion of the first substrate; a liquid crystal element over the first portion of the insulating layer; and a first portion of a second substrate over the liquid crystal element, and a sensor section comprising; a second portion of the first substrate; a light receiving element over the second portion of the first substrate; a second portion of the insulating layer over the light receiving element; and a spacer over the second portion of the insulating layer, wherein the liquid crystal element comprises a first electrode, a liquid crystal layer over the first electrode, and a second electrode over the liquid crystal layer, wherein the liquid crystal layer comprises a liquid crystal and a polymer, wherein the liquid crystal is dispersed in the polymer, wherein the spacer is capable of transmitting a light, wherein the spacer and the light receiving element are overlapped with each other, wherein the spacer comprises a region where the spacer and the liquid crystal layer are not overlapped with each other in a direction normal to a surface of the first substrate, and wherein the liquid crystal layer is in contact with a side surface of the spacer. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A display device comprising:
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a display section comprising; a first portion of a first substrate; a first portion of an insulating layer over the first portion of the first substrate; a liquid crystal element over the first portion of the insulating layer; and a first portion of a second substrate over the liquid crystal element, and a sensor section comprising; a second portion of the first substrate; a light receiving element over the second portion of the first substrate; a second portion of the insulating layer over the light receiving element; and a spacer over the second portion of the insulating layer, wherein the liquid crystal element comprises a first electrode, a liquid crystal layer over the first electrode, and a second electrode over the liquid crystal layer, wherein the liquid crystal layer comprises a liquid crystal and a polymer, wherein the liquid crystal is dispersed in the polymer, wherein the spacer is capable of transmitting a light, wherein the light receiving element is a vertical junction pin diode, wherein the spacer and the light receiving element are overlapped with each other, wherein the spacer comprises a region where the spacer and the liquid crystal layer are not overlapped with each other in a direction normal to a surface of the first substrate, and wherein the liquid crystal layer is in contact with a side surface of the spacer. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16)
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Specification
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Current AssigneeSemiconductor Energy Laboratory Co., Ltd.
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Original AssigneeSemiconductor Energy Laboratory Co., Ltd.
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InventorsKurokawa, Yoshiyuki, Ikeda, Takayuki, Ishitani, Tetsuji
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Primary Examiner(s)Nguyen, Hoan C
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Application NumberUS13/090,299Publication NumberTime in Patent Office1,245 DaysField of Search349/28, 349 42- 47, 349/1, 349/2, 349 25- 27, 349155-156US Class Current349/155CPC Class CodesG02F 1/13338 Input devices, e.g. touch p...G02F 1/1339 Gaskets; Spacers; Sealing o...
