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JP-7856729-B2 - Display panel, method for manufacturing the same, and display device.

JP7856729B2JP 7856729 B2JP7856729 B2JP 7856729B2JP-7856729-B2

Inventors

  • ラオ ボー
  • リ チョンチュン
  • ソン シャオシー
  • ヤオ ユアン
  • ニー リュウソン

Assignees

  • 合肥維信諾科技有限公司
  • クンシャン ゴー－ビシオノクス オプト－エレクトロニクス カンパニー リミテッド

Dates

Publication Date
20260511
Application Date
20241107
Priority Date
20231223

Claims (10)

  1. It includes a substrate, a shielding structure, a light-emitting functional layer, an insulating layer, and a touch control layer. The blocking structure is provided on the substrate and defines a plurality of blocking openings, and the blocking structure is provided with a plurality of first annular grooves, and the blocking structure is divided by the first annular grooves into a first structure and a second structure located within the first annular grooves. The light-emitting functional layer includes a plurality of light-emitting structures, the light-emitting structures are provided within the blocking opening, The insulating layer covers the side of the barrier structure that is separated from the substrate, The touch control layer is provided on the side of the insulating layer away from the barrier structure and includes a plurality of first touch control structures spaced apart in a first direction and a plurality of second touch control structures spaced apart in a second direction intersecting the first direction, wherein the first touch control structures and the second touch control structures are independent of each other and mutual capacitance is realized by the second structure, characterized in that the display panel.
  2. The second structure is located inside the first structure, and the second structure and the first structure are spaced apart by the first annular groove. The second structure and the first structure are insulated from each other. The second structure extends along the second direction and is provided between adjacent light-emitting structures along the first direction. The orthographic projection of the second structure in the second direction covers at least the gap between adjacent light-emitting structures along the second direction, The length of the second structure in the second direction is greater than the length of at least one of the light-emitting structures. Multiple of the second structures are provided at intervals along the first direction, and light-emitting units are provided at the positions of the intervals. Alternatively, some of the second structures are provided at intervals along the first direction, and other parts of the second structures are provided at intervals along the second direction. The orthographic projection of the second structure in the second direction is spaced apart from the orthographic projection of the second touch control structure in the second direction. Alternatively, the length of the first structure in the first direction is greater than the sum of the lengths of the plurality of light-emitting structures in the first direction. The display panel according to claim 1, characterized in that the length of the first structure in the first direction is greater than the length of the light-emitting functional layer.
  3. The two first touch control structures extend along the second direction and are spaced apart and located above the first structure, and extend up to the second structure, and are electrically connected to the second structure to realize the mutual capacitance . Along the second direction, the number of the second structure is less than the number of the first touch control structure. Along the second direction, the number of the second structure is one, and the number of the first touch control structure is two. Alternatively, along the second direction, the number of the second structures is N, where N is greater than 1, and the number of the first touch control structures is N+1. The second touch control structure extends along the first direction and is provided at least partially on the upper side of the second structure. Along the second direction, the second touch control structure provided on the upper side of the same second structure is located between the first touch control structures, The display panel according to claim 1, characterized in that the first annular groove extends along the second direction, and the second touch control structure extends to the upper side of the first structure.
  4. The first touch control structure extends over the end of the second structure and is electrically connected over the end of the second structure to realize the mutual capacitance . The projected contour of the second structure in the second direction does not exceed the projected contour of the light-emitting functional layer in the second direction. Alternatively, having at least one of the first annular grooves in the second direction, The number of the first annular grooves in the second direction is one. Alternatively, the number of first annular grooves in the second direction is multiple, and the multiple first annular grooves are provided at intervals along the second direction. The display panel according to claim 3, characterized in that at least one of the first annular grooves extends to the edge regions on both sides along the second direction of the blocking structure.
  5. The second structure comprises a conductive material, the insulating layer has a plurality of first vias on the upper side of the second structure, each first via exposing a portion of the second structure, and the first touch control structure contacts the second structure exposed by the first vias to realize the mutual capacitance . The second structure is made of a metal material, The material of the second structure is one or a combination of copper, silver, and gold. Alternatively, the cathode of an adjacent light-emitting structure is electrically connected via the first structure to provide a power signal, and the first touch control structure is electrically connected via the second structure to provide a touch control signal. The display panel according to claim 1, further comprising an IC, wherein the first touch control structure extends from the side frame to the IC.
  6. The orthographic projection of the upper end of the first structure away from the substrate onto the substrate covers the orthographic projection of the lower end of the first structure adjacent to the substrate onto the substrate. The cross-section of the first structure along the third direction perpendicular to the substrate on the side away from the first annular groove is one of T-shaped, inverted trapezoidal, or a combination thereof. The orthographic projection of the upper end of the second structure, which is separated from the substrate, onto the substrate covers the orthographic projection of the lower end of the second structure, which is close to the substrate, Alternatively, the cross-section of the second structure along the third direction perpendicular to the substrate is one of T-shaped, inverted trapezoidal, or a combination thereof. Alternatively, the display panel according to claim 1, characterized in that the transverse cross-section of the second structure is the same as the cross-section of the first structure along a third direction perpendicular to the substrate.
  7. The structure further includes a first sealing layer, the first sealing layer covering the side walls of the light-emitting structure and the shielding structure. The insulating layer is located on the side of the first sealing layer away from the light-emitting structure. The display panel according to claim 1, further comprising a second sealing layer and a third sealing layer on the side of the touch control layer away from the insulating layer.
  8. It includes a substrate, a shielding structure, a light-emitting functional layer, an insulating layer, and a touch control layer. The blocking structure is provided on the substrate and defines a plurality of blocking openings, and the blocking structure is provided with a plurality of first annular grooves, and the blocking structure is divided by the first annular grooves into a first structure and a second structure located within the first annular grooves. The light-emitting functional layer includes a plurality of light-emitting structures, the light-emitting structures are provided within the blocking opening, The insulating layer covers the side of the barrier structure that is separated from the substrate, The touch control layer is provided on the side of the insulating layer away from the barrier structure and includes at least two first touch control structures that extend along a second direction and are spaced apart, and a second touch control structure that extends along the first direction, wherein the projections of the at least two first touch control structures spaced apart along the second direction and the second structure onto the substrate are connected as a single straight line and intersect with the projection of the second touch control structure onto the substrate , and the first touch control structure and the second touch control structure are independent of each other and mutual capacitance is realized by the second structure , characterized in that the display panel.
  9. The steps include providing a substrate and A step of forming a shielding structure on the substrate, wherein the shielding structure defines a plurality of shielding openings, the shielding structure is provided with a plurality of first annular grooves, and the shielding structure is divided by the first annular grooves into a first structure and a second structure located within the first annular grooves, The steps include forming a plurality of light-emitting structures provided within the blocking opening, and an insulating layer covering the side of the blocking structure that is separated from the substrate, on the substrate, A method for manufacturing a display panel, comprising the step of forming a touch control layer on the substrate, wherein the touch control layer is provided on the side away from the barrier structure of the insulating layer and includes a plurality of first touch control structures provided at intervals along a first direction and a plurality of second touch control structures provided at intervals along a second direction intersecting the first direction, wherein the first touch control structures and the second touch control structures are independent of each other and mutual capacitance is realized by the second structure.
  10. A display device characterized by including a display panel according to any one of claims 1 to 8.

Description

This application relates to the field of display technology, and more particularly to display panels, methods for manufacturing the same, and display devices. This application claims priority based on a Chinese patent application filed with the China National Intellectual Property Office on December 23, 2023, with application number 2023117995321, titled "Display Panel, Method for Manufacturing the Same, and Display Device," and incorporates its entire contents by reference. OLED (Organic Light Emitting Diode) display panels are currently a focus of research in the field of display panels. Compared to liquid crystal display panels, they offer advantages such as lower energy consumption, lower cost, self-illumination, a wide viewing angle, and fast response speed. However, integrating touch control functionality using the Oncell method in current OLED display panels presents problems such as high cost and increased thickness. This is a schematic plan view of a display panel provided by one embodiment of the present invention.Figure 1 is a schematic cross-sectional view of the display panel at point A-A.Figure 1 is a schematic cross-sectional view of the display panel at point B-B.This is a schematic plan view of a display panel provided by another embodiment of the present application.Figure 4 is a schematic cross-sectional view of the display panel at point C-C.This is a flowchart of a method for manufacturing a display panel provided in one embodiment of the present invention.A schematic diagram of the structure of a display device provided by one embodiment of the present invention. As described in the background technology section, in conventional OLED display panels, the shielding structure acts as a position limiter for the deposition and sealing of the light-emitting structure. During deposition, the light-emitting layer and cathode of the light-emitting structure are blocked by the shielding structure, and the cathode is electrically connected through the shielding structure. This allows for easy manufacturing and a reduced thickness of the OLED display panel. However, in conventional OLED display panels, the touch control layer integrates the touch control function using the Oncell method. Manufacturing using this method requires etching at least four masks, resulting in high costs and a large thickness of the laminated structure. Consequently, OLED display panels have high manufacturing costs and large product thickness. Patent documents PCT/CN2023/134518, 202310759370.2, 202310740412.8, 202310707209.0, and 202311346196.5 describe related technical proposals for shielding structures, and for reference, their contents are incorporated into this application by reference. In view of the above problems, the present invention provides a display panel, a method for manufacturing the same, and a display device. By providing a first annular groove in the shielding structure, the shielding structure is divided into a first structure and a second structure located within the first annular groove. The first touch control structure and the second touch control structure are independent of each other, and mutual capacitance is achieved by forming a bridging structure with the second structure. Thus, compared to the conventional Oncell method which integrates touch control functions using four masks, the present invention improves upon the single mask used to manufacture the shielding structure, and further realizes Incell mutual capacitance type touch control with a single mask, resulting in lower manufacturing costs and a thinner product. Referring to Figures 1, 2, and 3 as a first embodiment, the present invention provides a display panel 10, which includes a substrate 100, a shielding structure 200, a light-emitting functional layer, an insulating layer 400, and a touch control layer 500. The shielding structure 200 is provided on the substrate 100 and defines a plurality of shielding openings 210, and is provided with a plurality of first annular grooves 220, and is divided into a first structure 230 and a second structure 240 by the first annular grooves 220, with the second structure 240 located within the first annular grooves 220. The light-emitting functional layer includes a plurality of light-emitting structures 300, which are provided corresponding to the shielding openings 210, and are provided within the shielding openings 210. The insulating layer 400 covers the side of the shielding structure 200 that is away from the substrate 100. The touch control layer 500 is provided on the side of the insulating layer 400 away from the barrier structure 200, and includes a plurality of first touch control structures 510 and a plurality of second touch control structures 520. The plurality of first touch control structures 510 are provided at intervals along the first direction Y, and the plurality of second touch control structures 520 are provided at intervals along the second direction X, with the first