Organic light-emitting display panel, display device, and method for sealing a display panel

Abstract

The present application discloses an organic light emitting display panel (100), a display device (10) and a sealing method for the display panel. The organic light emitting display panel (100) includes a cover plate (110), a substrate (120), an encapsulation layer (130) and a touch line (140). A touch binding pin (141) is installed on an edge of the cover plate (110), the touch binding pin (141) is connected to the touch line (140), and a plurality of shielding terminals (150) are installed on both sides of the touch binding pin (141), respectively. The touch binding pin (141) and the shielding terminal (150) are installed corresponding to the encapsulation layer (130).

Description

Technical Field

[0001] <Cross - reference to Related Applications> This application claims the priority of a Chinese patent application filed with the China National Intellectual Property Administration on September 13, 2022, with the application number CN202211111292.7 and the application title "Organic Light - Emitting Display Panel, Display Device, and Sealing Method of Display Panel", and all of its contents are incorporated herein by reference.

[0002] The present invention relates to the field of display technologies, and in particular, to an organic light - emitting display panel, a display device, and a sealing method of a display panel.

Background Art

[0003] Here, only background information related to this application is provided. In the prior art, an organic light - emitting diode (abbreviated as OLED) display is not necessarily a display manufactured using an organic light - emitting diode.

[0004] Currently, the OLED product touch technology occupies a large market. The touch - sensing circuit technology on the OLED cover plate is more mature. Currently, in the technology where a touch - capacitive screen is arranged in a package, a metal touch line bound to the touch area is formed on the cover plate. When the hard screen is sealed in the sealing layer, sintering unevenness occurs due to uneven transmittance of laser light, resulting in problems such as water overflow, air bubbles, and cracks in the sealing layer, which affect the sealing effect and cutting defects.

[0005] Currently, by increasing the laser energy or decreasing the moving speed of the laser head to perform laser sintering including the touch binding pin region, the problem of sintering unevenness is alleviated. However, if the laser energy decreases and the moving speed of the laser head is decelerated, it is impossible to accurately control the energy to increase and make it exist only in the touch binding pin region. Therefore, when the laser energy is located in the normal region, the energy changes suddenly and a sudden change in the form of the sealing layer is formed in the normal region, making the sealing layer prone to cracking and causing sealing failure.

Summary of the Invention

Problems to be Solved by the Invention

[0006] An object of the present invention is to provide an organic light-emitting display panel, a display device, and a method for sealing a display panel that avoid sealing unevenness and improve the sealing effect.

[0007] The present application discloses an organic light-emitting display panel, which includes a cover plate, a substrate, and a sealing layer. The cover plate is installed opposite to the substrate, the sealing layer is installed between the cover plate and the substrate, the organic light-emitting display panel further includes a touch circuit, the touch circuit is formed on the cover plate, touch binding pins are installed at the edge of the cover plate, the touch binding pins are connected to the touch circuit, a plurality of shielding terminals are installed on both sides of the touch binding pins respectively, the touch binding pins and the shielding terminals are installed corresponding to the sealing layer. Here, the lengths of the plurality of shielding terminals are the same as the length of the touch binding pins, and along the direction away from the touch binding pins, the widths of the plurality of shielding terminals decrease.

[0008] The present application further discloses a display device, which includes an outer cover plate and an organic light-emitting display panel, and the outer cover plate is installed on one side of the light-emitting surface of the organic light-emitting display panel.

[0009] The present application further discloses a method for sealing a display panel for sealing an organic light-emitting display panel. Applying a sealing layer corresponding to the edge position between the cover plate and the substrate; Sintering the sealing layer of the display panel along a preset path using a laser device; When it is detected that the laser device has moved to the normal area, sintering the sealing layer of the normal area based on the first preset laser energy and the first preset moving speed; When it is detected that the laser device has moved to the buffer area, gradually increasing the laser energy and / or gradually decreasing the moving speed, and sintering the sealing layer of the buffer area; When it is detected that the laser device has moved to the touch binding pin area, increasing the laser energy and sintering the sealing layer of the touch binding pin area, and including Here, on the cover plate, touch binding pins and shielding terminals located on both sides of the touch binding pins are formed, and in the normal area, the laser sintering ratios of the buffer area and the touch binding pin area are the same for the laser device.

[0010] The present application provides a plurality of shielding terminals on both sides of the touch binding pins, making the lengths of the plurality of shielding terminals coincide with the length of the touch binding pins, and reducing the widths of the plurality of shielding terminals along the direction away from the touch binding pins. In this way, when performing laser processing, the control of the energy change or the moving speed of the laser head is started in the area where the shielding terminals are installed. The shielding terminals with widths decreasing along the direction away from the touch binding pins provide an energy buffering effect for the area where the shielding terminals exist, avoiding the generation of steps due to sudden changes in laser energy, and avoiding the problem that the steps due to sudden changes in energy are too large at the contact point between the non-touch binding pin area and the touch binding pin area, which is likely to cause sealing unevenness.

Brief Description of the Drawings

[0011]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Embodiments for Carrying out the Invention

[0012] FIG. 1 is a schematic block diagram of the display device of the present application, FIG. 2 is a schematic structural diagram of the organic light-emitting display panel of the present application, FIG. 3 is a schematic cross-sectional structure diagram taken along the section line A-A' of FIG. 1, FIG. 4 is a schematic layout diagram of the touch binding pins and the shielding terminals of the present application. As shown in FIG. 1, the present application discloses a display device 10. As shown in FIG. 1, the present application discloses a display device 10. The display device 10 includes an external cover 200 and an organic light-emitting display panel 100. The outer cover plate 200 is installed on one side of the organic light-emitting display panel 100. Specifically, as can be seen with reference to FIGS. 2 to 3, the organic light-emitting display panel 100 includes a cover plate 110, a substrate 120, and a sealing layer 130. The cover plate 110 is installed opposite to the substrate 120. The sealing layer 130 is installed between the cover plate 110 and the substrate 120. The organic light-emitting display panel 100 further includes a touch circuit 140. The touch circuit 140 is formed on the cover plate 110. Touch binding pins 141 are installed at the edge of the cover plate 110. The touch binding pins 141 are connected to the touch circuit 140. A plurality of shielding terminals 150 are installed on both sides of the touch binding pins 141 respectively. Here, the lengths of the plurality of shielding terminals 150 are the same as the length of the touch binding pins 141, and along the direction away from the touch binding pins 141, the widths of the plurality of shielding terminals 150 decrease gradually.

[0013] In the solution of performing laser sintering including the touch binding pin region 180 by increasing the laser energy or decreasing the moving speed of the laser head, the present application provides a plurality of shielding terminals 150 on both sides of the touch binding pin 141. The lengths of the plurality of shielding terminals 150 are the same as the length of the touch binding pin 141, and along the direction away from the touch binding pin 141, the widths of the plurality of shielding terminals 150 decrease gradually. In this way, when performing laser processing, in the region where the shielding terminals 150 are installed, the energy of the laser head can be controlled to gradually increase or the laser head can be controlled to descend gently. The shielding terminals 150 with gradually decreasing widths along the direction away from the touch binding pin 141 provide an energy buffering effect for the region where the shielding terminals 150 are present, avoiding the generation of steps caused by sudden changes in laser energy, and avoiding the problem of sealing unevenness caused by overly large steps due to sudden changes in energy at the contact location between the region of the non-touch binding pin 141 and the region of the touch binding pin 141.

[0014] Here, the sealing layer 130 is a glass adhesive. The glass adhesive itself has a certain stability, poor fluidity, is relatively easily formed during coating and sealing, and can be deformed and adhered and adsorbed after absorbing heat, with a high sealing effect. Of course, other suitable sealing materials can also be used for sealing, which can guarantee the sealing effect and stability.

[0015] Hereinafter, the present application will be described in detail with reference to the drawings and selected embodiments.

Embodiment

[0016] The direction of the arrow in FIG. 2 is the direction of the preset path of the laser head, and the direction of the arrow in FIG. 3 is the irradiation direction of the laser light. As shown in FIGS. 2 to 3, the area where the touch binding pin 141 is installed is the touch binding pin area 180, the area where the shielding terminal 150 is installed is the buffer area 170, and the area where neither the touch binding pin 141 nor the shielding terminal 150 is installed is the normal area 160. In the case of sealing, the laser light sinter-seals by going around the edge of the sealing layer 130 along the normal area 160, the buffer area 170, and the touch binding pin area 180 of the display panel.

[0017] As shown in FIG. 4, the organic light-emitting display panel has four sides, namely e, f, g, and h respectively. The touch binding pins and the shielding terminals extend and are arranged in a direction parallel to e and g, that is, their length, and the touch binding pins and the shielding terminals extend and are arranged in the directions of f and h, that is, their width.

[0018] As shown in FIG. 8, the width of the shielding terminal 150 is indicated by a. In the adjacent shielding terminals 150, the distance from the side of the first shielding terminal 150 away from the second shielding terminal 150 to the side of the second shielding terminal 150 close to the first shielding terminal 150 is indicated by b, and the distance between two adjacent shielding terminals 150 is indicated by c.

[0019] As shown in FIG. 3, the width of the shielding terminal 150 adjacent to the touch binding pin 141 is equal to the width of the touch binding pin 141, the intervals between adjacent touch binding pins 141 are equal, the intervals between adjacent shielding terminals 150 are equal, and the intervals between adjacent touch binding pins 141 and the shielding terminals 150 are equal. Along the direction away from the touch binding pin 141, the widths of the plurality of shielding terminals 150 decrease by a first preset value. In this way, the arrangement pitches of the plurality of touch binding pins and the plurality of shielding terminals are all equal and uniform. Here, the first preset value is 10 μm. That is, along the direction away from the touch binding pin 141, when the interval c between two adjacent shielding terminals 150 remains unchanged, at the same time, a is gradually decreased by the first preset value. For example, from the shielding terminal 150 closest to the touch binding pin 141, from the side of the second shielding terminal 150 away from the first shielding terminal 150 adjacent to the shielding terminal 150 to the side of the second shielding terminal 150 close to the first shielding terminal 150, the interval b is 250 μm, the width a of the first shielding terminal 150 is 130 μm, and the interval c between the first shielding terminal 150 and the second shielding terminal 150 is 120 μm. At this time, a decreases by the first preset value of 10 μm. That is, the width a of the second shielding terminal 150 is 130 μm - 10 μm = 120 μm, and the width a of the third shielding terminal 150 is 120 μm - 10 μm = 110 μm. At this time, b is the sum of the width of the second shielding terminal 150 and the interval between the second shielding terminal 150 and the third shielding terminal 150, that is, 120 μm + 120 μm = 240 μm. That is, the interval b from the second shielding terminal 150 to the third shielding terminal 150 is 250 μm - 10 μm = 240 μm. By analogy, the adjacent shielding terminals 150, b, and a are arranged to decrease simultaneously by the first preset value. At this time, along the direction away from the touch binding pin 141, the ratio of the arrangement between two adjacent shielding terminals 150 is uniform.

[0020] When the laser light of the laser head performs laser sealing on the area of the sealing layer 130 along the preset path, when it reaches the buffer area 170, at this time, along the direction approaching the touch binding pin 141, the widths of two adjacent shielding terminals 150 gradually increase. When controlling the laser head to gradually increase the energy, the energy is the power multiplied by time. At this time, if the moving speed of the laser head remains unchanged (that is, the time remains unchanged), along the preset path, when the power of the laser head gradually increases, the energy of the laser head reaching the touch pin area gradually becomes larger. When it reaches the touch binding pin area 180, the laser light of the laser head reaches the maximum. However, increasing the laser energy of the laser head is a process of gradual increase. Due to the presence of the uniformly arranged shielding terminals 150, during the process of the laser head moving, the magnitude of the energy irradiated by the laser light to the area where the shielding terminals 150 are located is almost the same, that is, the same as the amount of heat absorbed by the laser light by the glass adhesive. Therefore, in the sealing process, the problem that the energy drop in the area of non-touch binding pins is too large due to the sudden change of the laser irradiation energy and the sealing becomes uneven does not occur. When the laser light irradiates the area of the touch binding pin 141, the energy also reaches the energy value that can firmly seal the touch binding pin area 180 according to the preset increase. Therefore, the entire sealing process can be made uniform and firm, and the problem of sealing unevenness can be avoided.

[0021] Conversely, when the laser light moves from the touch binding pin area 180 to the normal area 160, the irradiation energy of the laser light controlling the laser head gradually decreases. In this case, by gradually reducing the energy in the buffer area 170, the sudden change of the energy is avoided, the form of the sealing layer 130 is not suddenly changed, problems such as cracks are not generated, and the sealing ratio of each area in the entire sealing process is made as the same as possible to improve the overall sealing effect and increase the sealing strength.

[0022] Similarly, when reducing the moving speed of the laser head, since the moving time becomes longer, the integration of energy can be increased, a uniform sealing effect can be achieved, and at the same time as the change in the irradiation energy of the laser light of the laser head, it may be adjusted according to the moving descent speed of the laser head, and the setting and combination can be performed according to specific situations, which will be omitted here.

[0023] Also, in this embodiment, along the direction away from the touch binding pin 141, the widths of the plurality of shielding terminals 150 are decreased by a first preset value, and the intervals between two adjacent shielding terminals 150 are decreased by a second preset value, and the first preset value is equal to the second preset value. That is, the plurality of shielding terminals 150 are installed with the widths of the shielding terminals 150 and the intervals between two adjacent shielding terminals 150 decreasing simultaneously by the same preset value. At this time, a decreases by the first preset value of 10 μm. That is, the width a of the second shielding terminal 150 is 130 μm - 10 μm = 120 μm, the width a of the third shielding terminal 150 is 120 μm - 10 μm = 110 μm, the interval c between the second shielding terminal 150 and the third shielding terminal 150 decreases by the second preset value of 10 μm and is 120 μm - 10 μm = 110 μm. At this time, b is the sum of the width of the second shielding terminal 150 and the interval between the second shielding terminal 150 and the third shielding terminal 150, that is, 120 μm + 110 μm = 230 μm, that is, b is 250 μm - 20 μm = 230 μm. By analogy, the plurality of shielding terminals 150 are arranged in such a decreasing manner. Since the decreasing value of b is relatively large, when the arrangement of the shielding terminals 150 is relatively dense at this time, a plurality of shielding terminals 150 can be installed oppositely in the buffer region 170, and the arrangement decreasing method of the plurality of shielding terminals 150 is also relatively uniform, and a relatively uniform sealing effect can also be achieved during laser irradiation.

[0024] Of course, along the direction away from the touch binding pin 141, the widths of the plurality of shielding terminals 150 decrease at a first preset value, and the intervals between two adjacent shielding terminals 150 increase at a second preset value. Even if the first preset value is equal to the second preset value, the plurality of shielding terminals 150 can be arranged in an array with decreasing widths. In this case, the arrangement interval between every two shielding terminals 150 is wide, that is, the plurality of shielding terminals 150 are sparsely arranged. When laser light is irradiated, the energy of the laser light transmitted through each of the two shielding terminals 150 and irradiated onto the sealing layer 130 is large. After the sealing layer 130 absorbs it, the sealing effect between the cover plate 110 and the substrate 120 is relatively better. However, since the shielding terminals 150 are arranged to decrease in the direction away from the touch binding pin 141, even when cooperating with the laser head, the sealing uniformity can be improved by controlling the energy or moving speed of the laser head.

[0025] Here, the material of the shielding terminal 150 is the same as that of the touch binding pin 141, and the thickness of the shielding terminal 150 is equal to that of the touch binding pin 141. By performing the same material process, materials can be saved and the manufacturing process can be shortened. By adopting the same thickness, when laser light is irradiated, the transmittance of the laser light between the shielding terminal 150 and the touch binding pin 141 is the same, avoiding the problem that the amount of light irradiated absorbed by the sealing layer 130 is different due to the uneven transmittance, resulting in sealing unevenness in the sealing layer 130.

[0026] In this embodiment, the shielding terminal 150 may be made of a metal material. Since the touch binding pin 141 is also generally made of a metal material, the uniformity of light shielding can be achieved. Moreover, when irradiating laser light, if it is relatively good control to increase the energy, the energy may be increased at the same ratio. Of course, the shielding terminal 150 may be manufactured from a black matrix, a transparent electrode, or a color resist material. In this case, the material of the shielding terminal 150 is different from that of the touch binding pin 141. In this way, it is advantageous for the device to detect and identify the touch binding pin region 180, the buffer region 170, and the normal region 160, and it is possible to better control the moving speed or energy of the laser head and improve the encapsulation.

[0027] As shown in FIG. 3, the organic light-emitting display panel 100 further includes an inorganic layer 190. The inorganic layer 190 is disposed between the encapsulation layer 130 and the substrate 120. After forming the inorganic layer 190 on the substrate 120, the encapsulation layer 130 can also be reapplied.

Embodiment

[0028] FIG. 4 is a schematic layout diagram of a shielding terminal according to a second embodiment of the present application. As shown in FIG. 4, this embodiment is different from the first embodiment in that the shielding terminal 150 closest to the touch binding pin 141 has a slope 151 on the side surface close to the touch binding pin 141, that is, the shielding terminal 150 has a triangular structure. When the shielding terminal 150 is made of a metal material, the metal material itself has a light-shielding effect and has a certain effect on reflected light rays. The side surface close to the touch binding pin 141 is made into a slope 151 to form appropriate reflected laser light, and part of the laser light is reflected by the slope 151 to the encapsulation layer 130 corresponding to the touch binding pin region 180, increasing the amount of heat of the laser light that can be absorbed by the encapsulation layer 130 at this position, increasing the encapsulation adhesion of the encapsulation layer 130 at this position, and achieving an ideal encapsulation homogenization effect.

[0029] Here, the included angle between the inclined surface 151 and the side of the cover plate is d, the gradient of the inclined surface 151 is 45° or more and less than 90°, that is, 45° ≤ d < 90°. The larger the gradient of the inclined surface 151, the relatively larger the amount of laser light reflected to the touch binding pin region 180. Also, at this time, due to the presence of the inclined surface 151, the laser light can be reflected by the touch binding pin 141, refracted by reflection, and enter the region corresponding to the touch binding pin 141.

[0030] In order to reflect more laser light energy, a reflective material may be installed on the inclined surface 151. In this way, in accordance with the gradient of the inclined surface 151, more laser light energy can be reflected to the sealing layer 130 corresponding to the touch binding pin region 180, the sealing layer 130 in this region can absorb more laser light energy, and the sealing adhesion of the sealing layer 130 in this region can be improved.

[0031] When the shielding terminal 150 is made of a black matrix, a transparent electrode, or a color resist material, the light transmittance of the inclined surface 151 can be decreased along the inclination direction of the inclined surface 151, that is, the closer to the cover plate 110, the lower the light transmittance of the shielding terminal 150 having the inclined surface 151. By designing the light transmittance differently in this way, the energy absorption at this position during laser light irradiation can also be processed uniformly, and the energy at this position changes suddenly, or it is a process of gradually increasing or decreasing. Thereby, the sudden change in the energy at this position is too large, which causes a serious sudden change in the form of the sealing layer 130 and affects the sealing effect. Of course, when the shielding terminal 150 employs a semi-transparent material, by making the thickness of the shielding terminal 150 relatively thicker than the thickness of the touch binding pin 141, the light shielding ability of the shielding terminal 150 can be enhanced, and the laser light energy absorbed in the buffer region 170 can be made as consistent as possible in the touch binding pin region 180 and the normal region 160, so as to avoid a sudden change in the form of the sealing layer 130.

[0032] In addition, in this embodiment, the shielding terminal 150 closest to the touch binding pin 141 may have a structure with another inclined surface 151. For example, the inclined surface 151 may be arc-shaped. The arc-shaped circular arc surface faces the touch binding pin 141, which is advantageous for the reflection of laser light. Alternatively, the shielding terminal 150 may have a rectangular structure with an inclined surface 151. Specifically, it can be set according to the actual situation. At the same time, better sealing uniformity can be achieved in accordance with the irradiation energy or moving speed of the laser head laser light.

[0033] FIG. 6 is a flowchart of the sealing method of the display panel of the present application. As shown in FIG. 6, the present application discloses a sealing method of a display panel for sealing the above-mentioned organic light-emitting display panel. S1: Applying a sealing layer corresponding to the edge position between the cover plate and the substrate; S2: Laser-sintering the sealing layer of the display panel along a preset path using a laser device; S3: When it is detected that the laser device has moved to the normal area, sintering the sealing layer of the normal area based on the first preset laser energy and the first preset moving speed; S4: When it is detected that the laser device has moved to the buffer area, gradually increasing the laser energy and / or gradually decreasing the moving speed, and sintering the sealing layer of the buffer area; S5: When it is detected that the laser device has moved to the touch binding pin area, increasing the laser energy and sintering the sealing layer of the touch binding pin area, including. Here, touch binding pins and shielding terminals located on both sides of the touch binding pins are formed on the cover plate. In the normal area, the laser device has the same laser sintering ratio in the buffer area and the touch binding pin area. After sealing, the sealed area of the display panel is uniformly sealed.

[0034] Also, in step 5, by reducing the moving speed of the laser head, the sealing effect can be improved in cooperation with the light-shielding terminal, with good uniformity. Of course, it can also be performed simultaneously with the moving speed of the laser head due to changes in laser energy.

[0035] Although the inventive concept of the present application can form a very large number of embodiments, the number of pages of the application documents is limited and cannot list them one by one. Therefore, on the premise of no contradiction, new embodiments may be formed by arbitrarily combining between the above-described embodiments or between each technical feature, and after combining each embodiment or technical feature, the original technical effect can be enhanced.

[0036] It should be noted that the limitation of each step in the present solution does not limit the order of the steps on the premise that it does not affect the implementation of the specific solution means. The steps described above may be executed first, later, or simultaneously. As long as the present solution can be implemented, it should be regarded as belonging to the protection scope of the present application.

[0037] The above is a further detailed description of the present application with reference to specific embodiments, and it cannot be determined that the specific implementation of the present application is limited to these descriptions. For those skilled in the technical field to which the present application pertains, several simple derivations or substitutions can be made without departing from the concept of the present application, and all should be regarded as belonging to the protection scope of the present application.

Claims

1. An organic light-emitting display panel, comprising: a cover plate; a substrate disposed opposite to the cover plate; a sealing layer which is an inorganic adhesive capable of being sintered by laser irradiation and is disposed between the cover plate and the substrate so as to cover the substrate; the organic light-emitting display panel further includes a touch circuit, the touch circuit is formed on the cover plate, touch binding pins are provided at the edge of the cover plate, the touch binding pins are connected to the touch circuit, and a plurality of shielding terminals for shielding laser light from irradiating the substrate are respectively provided at the edges of the cover plate on both sides of the touch binding pins, and the touch binding pins and the shielding terminals are disposed corresponding to the sealing layer; wherein the lengths of the plurality of shielding terminals are the same as the length of the touch binding pins, and along the direction away from the touch binding pins, the widths of the plurality of shielding terminals decrease, thereby enabling the laser irradiation to be performed with uniform energy over the entire sealing layer. An organic light-emitting display panel characterized by the above.

2. The width of the shielding terminal adjacent to the touch binding pin is equal to the width of the touch binding pin, the intervals between adjacent touch binding pins are equal, the intervals between adjacent shielding terminals are equal, the intervals between the adjacent touch binding pin and the shielding terminal are equal, and along the direction away from the touch binding pin, the widths of the plurality of shielding terminals decrease by a first preset value. The organic light-emitting display panel according to Claim 1, characterized by the above.

3. The width of the shielding terminal adjacent to the touch binding pin is equal to the width of the touch binding pin, along the direction away from the touch binding pin, the widths of the plurality of shielding terminals decrease by a first preset value, the intervals between two adjacent shielding terminals decrease by a second preset value, and the first preset value is equal to the second preset value. The organic light-emitting display panel according to Claim 1, characterized by the above.

4. The width of the shielding terminal adjacent to the touch binding pin is equal to the width of the touch binding pin. Along the direction away from the touch binding pin, the widths of the plurality of shielding terminals decrease with a first preset value, the spacing between two adjacent shielding terminals increases with a second preset value, and the first preset value is equal to the second preset value. The organic light-emitting display panel according to claim 1, characterized in that.

5. The first preset value and the second preset value are 10 um. The organic light-emitting display panel according to claim 3, characterized in that.

6. The material of the shielding terminal is the same as that of the touch binding pin, and the thickness of the shielding terminal is equal to the thickness of the touch binding pin. The organic light-emitting display panel according to claim 1, characterized in that.

7. Among the shielding terminals adjacent to the touch binding pin, the side surface close to the touch binding pin is an inclined surface, and the gradient of the inclined surface is 45° or more and less than 90°. The shielding terminal is made of a metal material. The organic light-emitting display panel according to claim 6, characterized in that.

8. The shielding terminal is manufactured with a color resist material. In the shielding terminal adjacent to the touch binding pin, the light transmittance decreases along the inclination direction of the inclined surface. The organic light-emitting display panel according to claim 7, characterized in that.

9. An outer cover plate and the organic light-emitting display panel according to any one of claims 1 to 8, wherein the outer cover plate is installed on one side of the light-emitting surface of the organic light-emitting display panel. A display device characterized by this.

10. A method for sealing a display panel for sealing the organic light-emitting display panel according to any one of claims 1 to 8, Applying a sealing layer corresponding to the edge position between the cover plate and the substrate; Laser-sintering the sealing layer of the display panel along a preset path using a laser device; When it is detected that the laser device has moved to the normal area, sintering the sealing layer of the normal area based on the first preset laser energy and the first preset moving speed; When it is detected that the laser device has moved to the buffer area, increasing the laser energy and / or gradually decreasing the moving speed to sinter the sealing layer of the buffer area; When it is detected that the laser device has moved to the touch binding pin area, increasing the laser energy and sintering the sealing layer in the touch binding pin area; Here, on the cover plate, a touch binding pin and shielding terminals located on both sides of the touch binding pin are formed, and in the normal area, the sealing between the buffer area and the touch binding pin area is uniform for the laser device. A method for sealing a display panel, characterized by the above.

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