KR-102962716-B1 - Display panel and electric apparatus including the same

KR102962716B1KR 102962716 B1KR102962716 B1KR 102962716B1KR-102962716-B1

Abstract

The present invention provides a display panel and an electronic device equipped with the same, which improves light transmittance in an area where an electronic component is disposed, thereby minimizing performance degradation of the electronic component, reducing power consumption, and improving response speed. The display panel comprises: a substrate having at least one base layer and at least one barrier layer; a first pixel circuit and a second pixel circuit disposed on the substrate and spaced apart from each other with the transparent area between them, each including thin-film transistors and a storage capacitor; a first display element each electrically connected to the first pixel circuit; and a second display element each electrically connected to the second pixel circuit; wherein the base layer comprises a transparent polyimide resin, and the thin-film transistors of the first pixel circuit and the thin-film transistors of the second pixel circuit each comprise a semiconductor layer and a gate electrode disposed on the semiconductor layer.

Inventors

한재범
박영길
박정화
안나리
정수임

Assignees

삼성디스플레이 주식회사

Dates

Publication Date: 20260508
Application Date: 20200325

Claims (20)

As a display panel having a transparent area, A substrate having at least one base layer and at least one barrier layer; A first pixel circuit and a second pixel circuit disposed on the substrate, spaced apart from each other with the transparent region in between, each comprising thin-film transistors and a storage capacitor; First display elements electrically connected to each of the first pixel circuits; and It includes a second display element electrically connected to each of the above second pixel circuits; The above base layer comprises a transparent polyimide resin, and The thin-film transistors of the first pixel circuit and the thin-film transistors of the second pixel circuit each have a semiconductor layer and a gate electrode disposed on the semiconductor layer, and A display panel, wherein the above polyimide resin is a polymer compound comprising repeating units represented by the following chemical formula 1 or chemical formula 2. <Chemical Formula 1> Among the above chemical formula 1, X is selected from C(CR 1 R 2 R 3 ) 2 , O, SO 2 , and C=O, and R1 to R3 are independently selected from -F, -Cl, -Br, and -I, and Y1 is selected from a single bond, O, and SO2 , and E1 and E2 are independently hydrogen or CF3 , and d1 and d2 are independent integers from 1 to 4. <Chemical Formula 2> Among the above chemical formula 2, X is selected from C(CR 1 R 2 R 3 ) 2 , O, SO 2 , and C=O, and R1 to R3 are independently selected from -F, -Cl, -Br, and -I, and Y1 is selected from a single bond, O, and SO2 , and Y₂ is selected from a single bond, O, and SO₂ , and E1 to E3 are independently hydrogen or -CF3 , and d1 to d3 are independent integers from 1 to 4.
In paragraph 1, The above polyimide resin is, If the Yellowness Index (YI) is 10 or less, or The transmittance of light having a wavelength band of 400 nm or less has a range of 70% or more and 90% or less, or A display panel having a yellowness of 10 or less and a light transmittance having a wavelength band of 400 nm or less in the range of 70% or more and 90% or less.
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In paragraph 1, Among the above chemical formula 1, A display panel where X is C( CF3 ) 2 , Y is a single bond, and E1 and E2 are -CF3 .
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In paragraph 1, A display panel comprising an oxide semiconductor material in the semiconductor layer.
In paragraph 1, The above substrate includes a first base layer, a first barrier layer, a second base layer, and a second barrier layer stacked sequentially, and The first base layer and the second base layer comprise a transparent polyimide resin, A display panel comprising the first barrier layer and the second barrier layer, wherein the first barrier layer and the second barrier layer comprise an inorganic insulating material.
In paragraph 1, A flattening layer covering the first pixel circuit and the second pixel circuit; A first pixel electrode and a second pixel electrode disposed on the planarization layer and electrically connected to the first pixel circuit and the second pixel circuit, respectively, through a contact hole formed in the planarization layer; The first pixel electrode and an intermediate layer disposed on the first pixel electrode; and A display panel further comprising a counter electrode disposed on the intermediate layer.
In paragraph 8, At least one insulating layer interposed between the planarization layer and the semiconductor layer; and A display panel further comprising a thin film encapsulation layer that covers the entire counter electrode and has at least one inorganic layer and at least one organic layer.
In Paragraph 9, The insulating layer and the planarization layer each have a hole corresponding to a transmission area, and A display panel in which a portion of the above-mentioned at least one organic layer is located within the hole.
In paragraph 1, A display panel further comprising a lower conductive layer disposed below the semiconductor layer.
In Paragraph 11, The first pixel circuit and the second pixel circuit each include a driving thin-film transistor, and A display panel in which the semiconductor layer of the above-mentioned driving thin-film transistor and the above-mentioned lower conductive layer are electrically connected to each other.
In Paragraph 12, At least one insulating layer disposed on the semiconductor layer; A first electrode that contacts the semiconductor layer through a first contact hole formed in the insulating layer; and It further includes a connecting metal that contacts the lower conductive layer through a second contact hole formed in the insulating layer, and A display panel in which the first electrode and the connecting metal are formed on the same layer and connected to each other.
In paragraph 1, The gate electrode above is, 1st layer; and It has a second layer having a material different from the first layer above, and The above second layer is a display panel comprising titanium.
A display panel having a display area including a transparent area; and An electronic component positioned to overlap with at least the above-mentioned transmission area; Includes, The above display panel is, A substrate having at least one base layer and at least one barrier layer; A first pixel circuit and a second pixel circuit disposed on the substrate, spaced apart from each other with the transparent region in between, each comprising thin-film transistors and a storage capacitor; A flattening layer disposed on the first pixel circuit and the second pixel circuit; A first pixel electrode and a second pixel electrode disposed on the planarization layer and electrically connected to the first pixel circuit and the second pixel circuit, respectively, through a contact hole formed in the planarization layer; A counter electrode facing the first pixel electrode and the second pixel electrode; An intermediate layer between the first pixel electrode, the second pixel electrode, and the opposing electrode; and A plurality of insulating layers interposed between the substrate and the planarization layer, each including a hole corresponding to the transparent region; The above base layer comprises a transparent polyimide resin, and The thin-film transistors of the first pixel circuit and the thin-film transistors of the second pixel circuit each have a semiconductor layer including an oxide semiconductor and a gate electrode disposed on the semiconductor layer, and The above polyimide resin has a yellowness index (YI) of 10 or less and/or a light transmittance of 70% or more and 90% or less for a wavelength band of 400 nm or less, and In the above transmission region, the electronic component overlaps with the base layer, and An electronic device in which the above polyimide resin is a polymer compound comprising repeating units represented by the following chemical formula 1 or chemical formula 2. <Chemical Formula 1> Among the above chemical formula 1, X is selected from C(CR 1 R 2 R 3 ) 2 , O, SO 2 , and C=O, and R1 to R3 are independently selected from -F, -Cl, -Br, and -I, and Y1 is selected from a single bond, O, and SO2 , and E1 and E2 are independently hydrogen or CF3 , and d1 and d2 are independent integers from 1 to 4. <Chemical Formula 2> Among the above chemical formula 2, X is selected from C(CR 1 R 2 R 3 ) 2 , O, SO 2 , and C=O, and R1 to R3 are independently selected from -F, -Cl, -Br, and -I, and Y1 is selected from a single bond, O, and SO2 , and Y₂ is selected from a single bond, O, and SO₂ , and E1 to E3 are independently hydrogen or -CF3 , and d1 to d3 are independent integers from 1 to 4.
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In paragraph 15, The above-mentioned counter electrode is entirely covered and further comprises a thin film encapsulation layer having at least one inorganic layer and at least one organic layer; An electronic device in which a portion of the above-mentioned at least one organic layer is located within the hole.
In paragraph 15, An electronic device further comprising a lower conductive layer disposed below the semiconductor layer.

Description

Display panel and electronic apparatus including the same The present invention relates to a display panel and an electronic device equipped with the same, and more specifically, to a display panel with an expanded display area that enables image display even in an area where electronic components are placed, and an electronic device equipped with the same. Recently, display panels have become more diverse in their applications. In addition, there is a trend of display panels becoming thinner and lighter, expanding their range of use. As the area occupied by the display surface within the display panel is expanded, various functions integrated or linked to the panel are being added. As a means to add diverse functions while expanding the surface area, research is continuing on display panels that feature an area within the display surface for adding various functions, rather than just image displays. FIG. 1 is a schematic perspective view of an electronic device according to one embodiment of the present invention. FIG. 2 is a cross-sectional view schematically showing a part of an electronic device according to one embodiment of the present invention. FIG. 3 is an equivalent circuit diagram illustrating a pixel circuit included in a display panel according to one embodiment of the present invention. FIG. 4a is a plan view schematically showing the arrangement of pixels in a first display area of a display panel according to one embodiment of the present invention. FIG. 4b is a plan view schematically showing the arrangement of pixels in a second display area of a display panel according to one embodiment of the present invention. FIG. 5 is a cross-sectional view schematically showing a part of an electronic device according to one embodiment of the present invention. FIG. 6 is a cross-sectional view schematically showing a part of a display panel of an electronic device according to one embodiment of the present invention. The present invention is capable of various modifications and may have various embodiments; specific embodiments are illustrated in the drawings and described in detail in the detailed description. The effects and features of the present invention, and the methods for achieving them, will become clear by referring to the embodiments described below in detail together with the drawings. However, the present invention is not limited to the embodiments disclosed below but can be implemented in various forms. Hereinafter, embodiments of the present invention will be described in detail with reference to the attached drawings. When describing with reference to the drawings, identical or corresponding components are given the same reference numerals, and redundant descriptions thereof will be omitted. In the following examples, terms such as first, second, etc. are used not in a limiting sense, but for the purpose of distinguishing one component from another component. In the following examples, singular expressions include plural expressions unless the context clearly indicates otherwise. In the following embodiments, terms such as "include" or "have" mean that the features or components described in the specification are present, and do not preclude the possibility that one or more other features or components may be added. In the following embodiments, when a part such as a film, region, or component is described as being on or above another part, it includes not only cases where it is directly on top of another part, but also cases where another film, region, or component is interposed in between. In the drawings, the size of components may be exaggerated or reduced for convenience of explanation. For example, the size and thickness of each component shown in the drawings are depicted arbitrarily for convenience of explanation, so the present invention is not necessarily limited to what is illustrated. Where an embodiment can be implemented differently, a specific process sequence may be performed differently from the order described. For example, two processes described consecutively may be performed substantially simultaneously or proceed in the reverse order of the description. In this specification, “A and/or B” indicates the case where it is A, B, or Act and B. And, “at least one of A and B” indicates the case where it is A, B, or Act and B. In the following embodiments, when a membrane, region, component, etc. is described as being connected, it includes cases where the membrane, region, or component is directly connected, or/or cases where other membranes, regions, or components are interposed between the membranes, regions, or components to be indirectly connected. For example, when a membrane, region, component, etc. is described as being electrically connected in this specification, it indicates cases where the membrane, region, or component, etc. are directly electrically connected, and/or cases where other membranes, regions, or components are interposed between them to be indi