Display panel and manufacturing method thereof, and mobile terminal

Abstract

The present invention provides a display panel and a manufacturing method thereof, and a mobile terminal, comprising: a substrate, a light-emitting layer located on the substrate, and a color resistance layer located on a side of the light-emitting layer away from the substrate, wherein the light-emitting layer comprises a plurality of light-emitting parts, at least one of the light-emitting parts is a first-type light-emitting part, and the color resistance layer comprises a plurality of color resistance parts corresponding to the plurality of light-emitting parts one by one, each color resistance part and the corresponding light-emitting part are arranged relative to each other, and at least one color resistance part is a first-type color resistance part arranged relative to the first-type light-emitting part. The present invention achieves the function of blocking the light emitted by the first-type color resistance part from passing through by arranging the first-type color resistance part to include a shielding part for blocking the light from passing through, thereby avoiding the use of a laser to penetrate the color resistance part to eliminate the bright spot, thereby improving the success rate of pixel repair.

Description

Technical Field

[0001] The present invention relates to the field of display technology, and in particular to the manufacture of display devices, and specifically to a display panel and a manufacturing method thereof, and a mobile terminal. Background Art

[0002] OLED (Organic Light-Emitting Diode) panels have the advantages of being light, thin, having a wide viewing angle and saving power, and will become the mainstream of future development.

[0003] Among them, the OLED panel made with depolarizer technology is made by setting a color resist layer and a black matrix layer instead of a polarizer. The laser commonly used during pixel repair cannot penetrate the color resist of some colors to remove the conductive material in the corresponding area, resulting in some sub-pixels corresponding to the color resist being unable to be repaired, reducing the success rate of pixel repair.

[0004] Therefore, the success rate of repairing pixels of OLED panels made using depolarizer technology is low and urgently needs to be improved. Summary of the invention

[0005] The object of the present invention is to provide a display panel and a manufacturing method thereof, and a display device, so as to solve the technical problem that the success rate of repairing pixels of an OLED panel manufactured using a depolarizer technology is low.

[0006] An embodiment of the present invention provides a display panel, including:

[0007] substrate;

[0008] A light-emitting layer, located on the substrate, the light-emitting layer comprises a plurality of light-emitting parts, at least one of the light-emitting parts is a first type of light-emitting part;

[0009] a color resist layer, located on a side of the light-emitting layer away from the substrate, the color resist layer comprising a plurality of color resist portions corresponding to the plurality of light-emitting portions one by one, each of the color resist portions being arranged opposite to the corresponding light-emitting portion, and at least one of the color resist portions being a first type of color resist portion arranged opposite to the first type of light-emitting portion;

[0010] Wherein, the first type of color blocking portion includes a blocking portion, and the blocking portion is used to block light from passing through.

[0011] In one embodiment, the shielding portion is located in a region of the corresponding first-type color-resist portion away from the light-emitting layer.

[0012] In one embodiment, the shielding portion is made of a material including carbon.

[0013] In one embodiment, the display panel further includes:

[0014] A black matrix layer is provided on the same layer as the color resist layer, wherein the black matrix layer comprises a plurality of black matrix portions, wherein the angle between the side and the bottom of the black matrix portion is an acute angle, and one color resist portion is filled between two adjacent black matrix portions;

[0015] Wherein, each side portion of the shielding portion is coplanar with an adjacent side portion of an adjacent color-resist portion.

[0016] In one embodiment, the first type of light emitting portion includes an abnormal area, and the shielding portion is arranged opposite to the abnormal area in the corresponding first type of light emitting portion.

[0017] In one embodiment, the display panel further includes:

[0018] an anode layer, located on a side of the light-emitting layer close to the substrate, the anode layer comprising a plurality of anode portions corresponding one to one to the plurality of light-emitting portions;

[0019] The cathode layer is located on a side of the light-emitting layer away from the substrate, and the cathode layer at least covers a side of the first type of light-emitting portion away from the substrate.

[0020] In one embodiment, at least one of the light-emitting portions is a second type of light-emitting portion, the cathode layer is provided with at least one opening, and the opening and the second type of light-emitting portion are arranged opposite to each other.

[0021] In one embodiment, the plurality of color-resistance portions corresponding one to one with the plurality of light-emitting portions of different light-emitting colors have a transmittance greater than 60% for light with a wavelength greater than 850 nanometers.

[0022] In one embodiment, the display panel further includes:

[0023] The touch layer is located on a side of the color resist layer close to the light emitting layer. The touch layer includes a plurality of touch electrodes. The touch electrodes are located between two adjacent light emitting portions.

[0024] An embodiment of the present invention provides a mobile terminal, comprising a terminal body and a display panel as described above, wherein the terminal body and the display panel are integrated into one.

[0025] An embodiment of the present invention provides a method for manufacturing a display panel, comprising:

[0026] providing a substrate;

[0027] forming a light-emitting layer on the substrate, wherein the light-emitting layer comprises a plurality of light-emitting portions, at least one of the light-emitting portions being a first type of light-emitting portion;

[0028] A color resist layer is formed on a side of the light-emitting layer away from the substrate, the color resist layer includes a plurality of color resist portions corresponding to the plurality of light-emitting portions one by one, each of the color resist portions is arranged opposite to the corresponding light-emitting portion, at least one of the color resist portions is a first type of color resist portion arranged opposite to the first type of light-emitting portion, the first type of color resist portion includes a shielding portion, and the shielding portion is used to block light from passing through;

[0029] The step of forming the first type of color resist portion includes:

[0030] Forming a first type of color block on a side of the first type of light emitting portion away from the substrate;

[0031] The first type of color resist block is processed by laser from a side of the first type of color resist block away from the substrate to form the shielding portion in the first type of color resist block.

[0032] The present invention provides a display panel and a manufacturing method thereof, and a mobile terminal, wherein the display panel includes: a substrate; a light-emitting layer, located on the substrate, the light-emitting layer including a plurality of light-emitting parts, at least one of which is a first-type light-emitting part; a color-resistance layer, located on a side of the light-emitting layer away from the substrate, the color-resistance layer including a plurality of color-resistance parts corresponding to the plurality of light-emitting parts one by one, each of the color-resistance parts and the corresponding light-emitting part being arranged opposite to each other, at least one of the color-resistance parts being a first-type color-resistance part arranged opposite to the first-type light-emitting part; wherein the first-type color-resistance part includes a shielding part, and the shielding part is used to block light from passing through. The present invention achieves the function of blocking the light emitted by the first-type color-resistance part from passing through by setting the first-type color-resistance part to include a shielding part for blocking light from passing through, thereby avoiding the use of a laser to penetrate the color-resistance part to eliminate bright spots, thereby improving the success rate of pixel repair. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The present invention is further described below by means of the accompanying drawings. It should be noted that the accompanying drawings described below are only used to explain some embodiments of the present invention, and those skilled in the art can also obtain other accompanying drawings based on these accompanying drawings without creative work.

[0034] Figure 1 A schematic cross-sectional view of a first display panel provided by an embodiment of the present invention.

[0035] Figure 2 A schematic cross-sectional view of a second display panel provided by an embodiment of the present invention.

[0036] Figure 3 A schematic cross-sectional view of a third display panel provided by an embodiment of the present invention.

[0037] Figure 4A distribution diagram of light transmittance of color resist portions of different colors provided in an embodiment of the present invention.

[0038] Figure 5 The present invention provides a flow chart of a method for manufacturing a display panel according to an embodiment of the present invention.

[0039] Figure 6 A schematic diagram of a scenario of a method for manufacturing a display panel provided in an embodiment of the present invention.

[0040] Figure 7 A schematic diagram of another scenario of the method for manufacturing a display panel provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0041] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0042] In the description of the present invention, it is necessary to understand that the terms "above", "away from", "close to", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings. For example, "above" simply means above an object, and may specifically refer to directly above, obliquely above, or the upper surface, as long as it is above the level of the object; "close to" refers to the side of the object in the figure that is closer to the other object. The above positions or positional relationships are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as a limitation to the present invention.

[0043] In addition, it should be noted that the drawings only provide structures that are closely related to the present invention, and omit some details that are not closely related to the invention. The purpose is to simplify the drawings and make the invention clear at a glance, rather than to indicate that the actual device is exactly the same as the attached drawings. Figure 1 The same is not a limitation of the actual device.

[0044] The present invention provides a display panel, which includes but is not limited to the following embodiments.

[0045] In one embodiment, if Figures 1 to 3As shown, the display panel 100 includes: a substrate 10; a light-emitting layer, located on the substrate 10, the light-emitting layer includes a plurality of light-emitting portions 201, at least one of the light-emitting portions 201 is a first-type light-emitting portion 2011; a color-resistance layer, located on a side of the light-emitting layer away from the substrate 10, the color-resistance layer includes a plurality of color-resistance portions 301 corresponding to the plurality of light-emitting portions 201 one by one, each of the color-resistance portions 301 and the corresponding light-emitting portion 201 are arranged opposite to each other, and at least one of the color-resistance portions 301 is a first-type color-resistance portion 3011 arranged opposite to the first-type light-emitting portion 2011; wherein the first-type color-resistance portion 3011 includes a shielding portion 401, and the shielding portion 401 is used to block light from passing through.

[0046] The substrate 10 may be a flexible substrate or a rigid substrate, the constituent material of the flexible substrate may include but is not limited to polyimide, and the constituent material of the rigid substrate may include but is not limited to glass. The plurality of light-emitting parts 201 may include but are not limited to a red light-emitting part emitting red light, a green light-emitting part emitting green light, and a blue light-emitting part emitting blue light, and the constituent materials of the light-emitting parts 201 with different light-emitting colors may be different; further, a pixel definition part 501 may be provided between two adjacent light-emitting parts 201, and the pixel definition part 501 is used to block the two adjacent light-emitting parts 201 to avoid color mixing between the two; further, a plurality of pixel definition parts 501 may be formed before the plurality of light-emitting parts 201, and the angle between the side and the bottom of the pixel definition part 501 may be an acute angle, so that the light-emitting part 201 can be filled between the corresponding two pixel definition parts 501, and the risk of overflow of the light-emitting part 201 can be reduced.

[0047] Specifically, the wavelength range of light that can be transmitted by the color resist portion 301 corresponding to the red light-emitting portion includes the wavelength of red light, the wavelength range of light that can be transmitted by the color resist portion 301 corresponding to the green light-emitting portion includes the wavelength of green light, and the wavelength range of light that can be transmitted by the color resist portion 301 corresponding to the blue light-emitting portion includes the wavelength of blue light, that is, the wavelength range of light that can be transmitted by each color resist portion 301 includes the wavelength of the light emitted by the corresponding light-emitting portion 201, and the wavelength of the light emitted by each light-emitting portion 201 is outside the wavelength range of light that can be transmitted by the color resist portion 301 corresponding to the light-emitting portion 201 that emits light of a different color, so as to avoid color mixing when displaying the picture.

[0048] In particular, the first type of light emitting unit 2011 can be understood as a light emitting unit 201 with abnormal light emission, for example, the brightness of the light actually emitted by the first type of light emitting unit 2011 is greatly different from the brightness of the light theoretically emitted, or the first type of light emitting unit 2011 keeps emitting light and cannot be extinguished, or the brightness of some areas in the area where the first type of light emitting unit 2011 is located is abnormal due to foreign matter. It should be noted that, since the human eye is highly sensitive to bright spots, if the area where the first type of light emitting unit 2011 is located is not processed, the image display quality of the display panel 100 will be seriously reduced.

[0049] Specifically, in this embodiment, a shielding portion 401 is provided in the first type of color resistance portion 3011 arranged opposite to the first type of light emitting portion 2011, and the shielding portion 401 is used to block the light from passing through, that is, the light emitted by the first type of light emitting portion 2011 can be blocked by the corresponding shielding portion 401 to avoid being incident on the human eye, that is, the area where the first type of light emitting portion 2011 is located is in a normally dark state. It can be understood that since the human eye is less sensitive to dark spots, and the number of the first type of light emitting portions 2011 that are in a dark state when the display panel 100 is displaying a picture is very small, the light emitted by the other light emitting portions 201 meets the requirements to enable the corresponding area to display normally, that is, the dark spots in the picture received by the human eye can be ignored, and the picture display quality of the display panel 100 is improved.

[0050] It should be noted that when the laser acts on the conductive material located below the color resist layer, the conductive material in the corresponding area cannot be removed because part of the color resist portion 301 cannot be penetrated by the laser, and thus the corresponding light-emitting portion 201 cannot be prevented from emitting light, so that bright spots still exist. Combined with the above discussion, in this embodiment, a shielding portion 401 is provided in the first type of color resist portion 3011 arranged opposite to the first type of light-emitting portion 2011 to block the light emitted by the first type of light-emitting portion 2011 from passing through, that is, the shielding portion 401 in this embodiment is not located on the side of the first type of color resist portion 3011 close to the light-emitting layer, thereby avoiding the use of laser penetrating the color resist portion 301 to eliminate bright spots, thereby improving the success rate of pixel repair.

[0051] In one embodiment, if Figures 1 to 3As shown, the shielding portion 401 is located in the area where the corresponding first type of color resist portion 3011 is far away from the light-emitting layer. It can be understood that in the first type of color resist portion 3011 of this embodiment, the shielding portion 401 is arranged close to the light-emitting side of the display panel 100, and light can be eliminated in the area close to the light-emitting side, avoiding the need for secondary elimination of light due to the shielding portion 401 being arranged far away from the light-emitting side, thereby improving the reliability of light elimination. Specifically, a laser can be used to irradiate the first type of color resist portion 3011 from the light-emitting side of the display panel 100 to act on the portion of the first type of color resist portion 3011 close to the light-emitting side of the display panel 100, so as to convert the portion of the first type of color resist portion 3011 close to the light-emitting side of the display panel 100 into the shielding portion 401.

[0052] In one embodiment, the material forming the shielding portion 401 includes carbon. Among them, the constituent material of the color resist portion 301 can be an organic material, that is, the constituent material of the color resist portion 301 can include carbon elements, oxygen elements and hydrogen elements. Combined with the above discussion, using laser to irradiate the first type of color resist portion 3011 from the light-emitting side of the display panel 100 can cause the portion of the first type of color resist portion 3011 close to the light-emitting side of the display panel 100 to be carbonized. It can be understood that the oxygen element and the hydrogen element in the portion of the first type of color resist portion 3011 close to the light-emitting side of the display panel 100 become gaseous and separate from the first type of color resist portion 3011, so that the portion of the first type of color resist portion 3011 close to the light-emitting side of the display panel 100 only includes carbon elements to form a shielding portion 401. It can be understood that the shielding portion 401 includes multiple black particles formed by carbon elements. Therefore, the shielding portion 401 can block the light emitted by the first type of light-emitting portion 2011 from passing through so that the corresponding area appears in a dark state, thereby realizing the repair of the corresponding sub-pixel.

[0053] In one embodiment, if Figures 1 to 3 As shown, the display panel 100 further includes: a black matrix layer, which is arranged in the same layer as the color resist layer, wherein the black matrix layer includes a plurality of black matrix portions 601, wherein the angle between the side and the bottom of the black matrix portion 601 is an acute angle, and a color resist portion 301 is filled between two adjacent black matrix portions 601; wherein, Figure 1 As shown, each side portion of the shielding portion 401 is coplanar with an adjacent side portion of the adjacent black matrix portion 601 .

[0054] It should be noted that if Figures 1 to 3As shown, the angle between the side and the bottom of the black matrix portion 601 is an acute angle. Combined with the above discussion on the pixel definition portion 501, the black matrix portion 601 can block the two adjacent color resistance portions 301 to avoid mixing of the two colors. Combined with the above discussion, the wavelength range of light that can be transmitted by each color resistance portion 301 includes the wavelength of the light emitted by the corresponding light-emitting portion 201, and the wavelength of the light emitted by each light-emitting portion 201 is outside the wavelength range of light that can be transmitted by the color resistance portion 301 corresponding to the light-emitting portion 201 that emits light of different colors. The black matrix portion 601 in this embodiment is located between two adjacent color resistance portions 301. The black matrix portion 601 can absorb light of any color, that is, the area where the multiple color resistance portions 301 are located is a light-transmitting area that can transmit light of corresponding colors. Further, the angle between the side and the bottom of the black matrix portion 601 is an acute angle, that is, the corresponding light-transmitting area also presents a gradually increasing opening, which effectively increases the light-emitting area.

[0055] On this basis, if Figure 1 As shown, each side portion of the blocking portion 401 in the present embodiment is coplanar with the adjacent side portion of the adjacent black matrix portion 601, that is, the blocking portion 401 can be formed as a side of the corresponding first-type color resist portion 3011 away from the light-emitting layer, and can also block the light emitted through the side portion of the first-type color resist portion 3011; it can be understood that when the first-type light-emitting portion 2011 emits abnormal light as a whole, the present embodiment can achieve comprehensive blocking of the light emitted by the first-type light-emitting portion 2011, thereby improving the reliability of repairing the corresponding sub-pixel.

[0056] In one embodiment, if Figure 2 As shown, the first type of light emitting unit 2011 includes an abnormal area A, and the shielding portion 401 is arranged opposite to the abnormal area A in the corresponding first type of light emitting unit 2011. In combination with the above discussion, the abnormal area A can be understood as a part of the area where the first type of light emitting unit 2011 is located, where the brightness is abnormal due to the effect of foreign matter, that is, the area of ​​the first type of light emitting unit 2011 other than the abnormal area A can emit light normally. It can be understood that the shielding portion 401 in the present embodiment is only arranged opposite to the abnormal area A in the corresponding first-type light-emitting portion 2011, but is not arranged opposite to the entire first-type light-emitting portion 2011. On the one hand, the light emitted from the part of the area other than the abnormal area A in the first-type light-emitting portion 2011 can still be emitted through the part of the first-type color resist portion 3011 except the shielding portion 401 to reduce the size of the dark spot. On the other hand, combined with the above discussion, only the part of the first-type color resist portion 3011 that is arranged opposite to the abnormal area A in the corresponding first-type light-emitting portion 2011 can be carbonized, which reduces the range of laser action and can effectively save energy or improve the efficiency of pixel repair.

[0057] In one embodiment, if Figures 1 to 3 As shown, the display panel 100 further includes: an anode layer, located on a side of the light-emitting layer close to the substrate 10, the anode layer including a plurality of anode portions 701 corresponding to the plurality of light-emitting portions 201; a cathode layer 80, located on a side of the light-emitting layer away from the substrate 10, as shown in FIG. Figure 1 and Figure 2 As shown, the cathode layer 80 at least covers the side of the first type light emitting portion 2011 away from the substrate 10 .

[0058] Each anode portion 701 may have a corresponding anode voltage, and the entire cathode layer 80 may have a cathode voltage. For the light-emitting portion 201 located between the anode portion 701 and the cathode layer 80, under the action of the corresponding anode voltage and cathode voltage, electrons are injected from the cathode layer 80 into the light-emitting portion 201, and holes are injected from the anode portion 701 into the light-emitting portion 201, so that electrons and holes recombine in the light-emitting portion 201 to emit light. Further, as Figures 1 to 3 As shown, the display panel 100 also includes a circuit layer 90 located between the substrate 10 and the anode layer. The circuit layer 90 may include multiple gate lines for transmitting gate signals, multiple data lines for transmitting data signals, and multiple driving transistors. The multiple thin film transistors correspond to the multiple light-emitting portions 201 one by one, and each thin film transistor and the corresponding light-emitting portion 201 are arranged relative to each other and electrically connected to the corresponding anode portion 701. The multiple gate lines and the multiple data lines are arranged to intersect to form a plurality of unit areas, and each driving transistor is located in the corresponding unit area; specifically, each thin film transistor is electrically connected to the corresponding gate line and the corresponding data line to input a corresponding signal to the corresponding anode portion 701, thereby controlling the corresponding light-emitting portion 201 to emit light.

[0059] It can be understood that due to the uncertainty of the abnormally luminous light-emitting portion 201, a whole cathode layer 80 can be formed before pixel repair. Combined with the above discussion, in the present invention, the corresponding first-type color resistance portion 3011 is processed according to the position of the first-type light-emitting portion 2011 to form a blocking portion 401, thereby blocking the light emitted by the first-type light-emitting portion 2011 from being emitted and the light-emitting side. On this basis, in this embodiment, the cathode layer 80 is defined to cover at least one side of the first-type light-emitting portion 2011 away from the substrate 10, that is, in this embodiment, there is no need to process the portion of the cathode layer 80 that is opposite to the first-type light-emitting portion 2011 to prevent the first-type light-emitting portion 2011 from emitting light. Therefore, on the one hand, the present embodiment avoids removing the portion of the cathode layer 80 corresponding to the first type of light-emitting portion 2011. Combined with the above discussion, the present embodiment can reduce the risk of the bright spot being unable to be removed due to the laser being unable to penetrate some of the light-emitting portions 201 and acting on the corresponding portion of the cathode layer 80, thereby improving the success rate of pixel repair. On the other hand, when only the portion of the first type of color resist portion 3011 that is arranged opposite to the abnormal area A in the corresponding first type of light-emitting portion 2011 is carbonized, since the cathode layer 80 covers the side of the first type of light-emitting portion 2011 away from the substrate 10, the first type of light-emitting portion 2011 can still emit light, and the light emitted from the portion of the first type of light-emitting portion 2011 other than the abnormal area A can still be emitted through the portion of the first type of color resist portion 3011 other than the shielding portion 401 to reduce the size of the dark spot.

[0060] In one embodiment, if Figure 3 As shown, at least one of the light-emitting parts 201 is a second type of light-emitting part 2012, and the cathode layer 80 is provided with at least one opening 801, and the opening 801 and the second type of light-emitting part 2012 are arranged opposite to each other. The second type of light-emitting part 2012 can also be understood as a light-emitting part 201 with abnormal light emission, and the above description of the first type of light-emitting part 2011 can be referred to. The color of the light emitted by the second type of light-emitting part 2012 and the color of the light emitted by the first type of light-emitting part 2011 can be the same or different.

[0061] It can be understood that the color resistance portion 301 corresponding to the light emitting portion 201 of different colors has different light transmittance distributions. Here, the red color resistance portion corresponding to the red light emitting portion, the green color resistance portion corresponding to the green light emitting portion, and the blue color resistance portion corresponding to the blue light emitting portion are shown in FIG. Figure 4Taking the figure as an example, the transmittance of the red color resist portion for light with a wavelength greater than 650 nanometers can be approximately 70% or more, the transmittance of the green color resist portion for light with a wavelength of 500 nanometers to 570 nanometers and light with a wavelength greater than 750 nanometers can be approximately 40% or more, and the transmittance of the blue color resist portion for light with a wavelength of 420 nanometers to 500 nanometers and light with a wavelength greater than 850 nanometers can be approximately 40% or more.

[0062] Specific, combined Figure 3 and Figure 4 As shown, when the first type of color resist portion 3011 is any one of the red color resist portion, the green color resist portion, and the blue color resist portion, since the transmittance of any one of the red color resist portion, the green color resist portion, and the blue color resist portion for light with a wavelength less than 350 nanometers is extremely low, that is, the corresponding absorption rate is extremely high, it can be understood that the light with a wavelength less than 350 nanometers can fully act on any one of the red color resist portion, the green color resist portion, and the blue color resist portion to cause carbonization, and therefore the first type of color resist portion 3011 can be processed by a laser with a wavelength less than 350 nanometers to form a shielding portion 401.

[0063] Among them, Figures 1 to 3 As shown, the display panel 100 may further include a flat layer 901 located on the side of the color resist layer and the black matrix layer away from the substrate 10, and the side of the flat layer 901 away from the substrate 10 may be parallel to the horizontal plane to achieve flatness. In this embodiment, the second type of light emitting portion 2012 may be understood as avoiding the second type of light emitting portion 2012 from emitting light by removing the corresponding cathode.

[0064] Specific, combined Figure 3 and Figure 4As shown, in order to avoid that the laser penetration rate is too high and the film layers such as the flat layer 901 located on the color resist layer are damaged, when the second type of light emitting portion 2012 is a red light emitting portion, a laser with a wavelength of 650 nanometers to 750 nanometers can be used but not limited to penetrate the color resist portion 301 corresponding to the second type of light emitting portion 2012, that is, a laser with a wavelength of 650 nanometers to 750 nanometers can be used but not limited to penetrate the red color resist portion to process the cathode layer 80 to form a corresponding opening 801. When the second type of light emitting portion 2012 is a green light emitting portion, a laser with a wavelength of 520 nanometers to 550 nanometers can be used but not limited to penetrate the red color resist portion to process the cathode layer 80 to form a corresponding opening 801. The laser penetrates the color resist portion 301 corresponding to the second type of light-emitting portion 2012, that is, a laser with a wavelength of but not limited to 520 nanometers to 550 nanometers is used to penetrate the green color resist portion to process the cathode layer 80 to form a corresponding opening 801. When the second type of light-emitting portion 2012 is a blue light-emitting portion, a laser with a wavelength of but not limited to 420 nanometers to 490 nanometers can be used to penetrate the color resist portion 301 corresponding to the second type of light-emitting portion 2012, that is, a laser with a wavelength of but not limited to 420 nanometers to 490 nanometers is used to penetrate the blue color resist portion to process the cathode layer 80 to form a corresponding opening 801.

[0065] In one embodiment, if Figure 4 As shown, the multiple color blocking parts corresponding to the multiple light emitting parts of different light emitting colors have a transmittance greater than 60% for light with a wavelength greater than 850 nanometers. Figure 4 As can be seen from the above description, the transmittance of the red color resist portion for light with a wavelength greater than 650 nanometers can be approximately 70% or more, the transmittance of the green color resist portion for light with a wavelength greater than 750 nanometers can be approximately 40% or more, and the transmittance of the blue color resist portion for light with a wavelength greater than 850 nanometers can be approximately 40% or more. On this basis, Figure 4 As shown, the red color resist portion, the green color resist portion, and the blue color resist portion in this embodiment can have a transmittance greater than 60% for light with a wavelength greater than 850 nanometers. Therefore, under the premise of ensuring that the flat layer 901 and other film layers on the color resist layer are not burned, lasers with a wavelength greater than 850 nanometers can be used to penetrate the corresponding areas of the red color resist portion, the green color resist portion, or the blue color resist portion in the cathode layer 80 to form corresponding openings 801.

[0066] In one embodiment, if Figures 1 to 3As shown, the display panel 100 further includes: a touch layer 902, which is located on the side of the color resist layer close to the light emitting layer, and the touch layer 902 includes a plurality of touch electrodes 9021, and the touch electrodes 9021 are located between two adjacent light emitting parts 201. Among them, the touch layer 902 can realize the touch function, and the plurality of touch electrodes 9021 can include a plurality of transmitting electrodes and a plurality of receiving electrodes. The transmitting electrodes can transmit touch transmitting signals to drive the receiving electrodes to work, and the receiving electrodes can generate touch sensing signals under external touch. It can be understood that the touch layer 902 in this embodiment can be a capacitive touch layer instead of an optical touch layer to avoid being affected by the shielding part 401. Further, the touch electrode 9021 is located between two adjacent light emitting parts 201, which can reduce the influence of the touch layer 902 on the light emitted by the light emitting part 201. Further, the constituent material of the touch electrode 9021 can include indium tin oxide, which further reduces the influence of the touch layer 902 on the light emitted by the light emitting part 201.

[0067] The present invention also provides a mobile terminal, which includes a terminal main body and a display panel as described above, wherein the terminal main body and the display panel are combined into one body.

[0068] The present invention also provides a method for manufacturing a display panel, such as Figure 5 As shown, the manufacturing method of the display panel may include but is not limited to the following steps, and combined with Figure 6 The scene diagram is used as a reference.

[0069] S1, providing a substrate.

[0070] Among them, Figure 6 As shown, the substrate 10 may be a flexible substrate or a rigid substrate. The constituent material of the flexible substrate may include but is not limited to polyimide, and the constituent material of the rigid substrate may include but is not limited to glass.

[0071] S2, forming a light-emitting layer on the substrate, wherein the light-emitting layer includes a plurality of light-emitting parts, and at least one of the light-emitting parts is a first type of light-emitting part.

[0072] Among them, Figure 6As shown, the multiple light-emitting parts 201 may include but are not limited to a red light-emitting part that emits red light, a green light-emitting part that emits green light, and a blue light-emitting part that emits blue light, and the constituent materials of the light-emitting parts with different luminous colors may be different; further, a pixel definition part 501 may be provided between two adjacent light-emitting parts 201, and the pixel definition part 501 is used to block the two adjacent light-emitting parts 201 to avoid color mixing between the two; further, a plurality of pixel definition parts 501 may be formed before the multiple light-emitting parts 201, and the angle between the side and the bottom of the pixel definition part 501 may be an acute angle, so that the light-emitting part 201 can be filled between the corresponding two pixel definition parts 501, and the risk of overflow of the light-emitting part 201 can be reduced.

[0073] In particular, the first type of light emitting unit 2011 can be understood as a light emitting unit with abnormal light emission, for example, the brightness of the light actually emitted by the first type of light emitting unit 2011 is greatly different from the brightness of the light theoretically emitted, or the first type of light emitting unit 2011 keeps emitting light and cannot be extinguished, or part of the area where the first type of light emitting unit 2011 is located has abnormal brightness due to foreign matter. It should be noted that, since the human eye is highly sensitive to bright spots, if the area where the first type of light emitting unit 2011 is located is not processed, the image display quality of the display panel will be seriously reduced.

[0074] Specifically, Figure 6 As shown, before forming multiple pixel definition parts 501, a circuit layer 90 and multiple anode parts 701 located on the circuit layer 90 can be formed in sequence on the substrate 10. The specific arrangement of the circuit layer 90 and the multiple anode parts 701 can refer to the relevant description above.

[0075] S3, forming a color resist layer on a side of the light-emitting layer away from the substrate, the color resist layer including a plurality of color resist portions corresponding one to one with the plurality of light-emitting portions, each of the color resist portions and the corresponding light-emitting portion being arranged opposite to each other, at least one of the color resist portions being a first type of color resist portion arranged opposite to the first type of light-emitting portion, the first type of color resist portion including a shielding portion, and the shielding portion being used to block light from passing through.

[0076] Specifically, Figure 6 As shown, the wavelength range of light that can be transmitted by each color resist portion 301 includes the wavelength of the light emitted by the corresponding light-emitting portion 201, and the wavelength of the light emitted by each light-emitting portion 201 is outside the wavelength range of light that can be transmitted by the color resist portion 301 corresponding to the light-emitting portion 201 that emits light of a different color, so as to avoid color mixing when displaying the picture.

[0077] It can be understood that in this embodiment, a shielding portion 401 is provided in the first type of color resistance portion 3011 arranged opposite to the first type of light-emitting portion 2011, and the shielding portion 401 is used to block the light from passing through, that is, the light emitted by the first type of light-emitting portion 2011 can be blocked by the corresponding shielding portion 401 to avoid being incident on the human eye, that is, the area where the first type of light-emitting portion 2011 is located is in a normally dark state. It can be understood that since the human eye is less sensitive to dark spots, and the number of the first type of light-emitting portions 2011 that are in a dark state when the display panel is displaying a picture is very small, the light emitted by the other light-emitting portions 201 meets the requirements to enable the corresponding area to display normally, that is, the dark spots in the picture received by the human eye can be ignored, and the picture display quality of the display panel is improved. Moreover, in the present embodiment, a shielding portion 401 is provided in the first type of color resist portion 3011 arranged opposite to the first type of light emitting portion 2011 to block the light emitted by the first type of light emitting portion 2011 from passing through, thereby avoiding the use of laser penetrating the color resist portion 301 to eliminate bright spots, thereby improving the success rate of pixel repair.

[0078] Specifically, Figure 6 As shown, before forming the color resist layer, a cathode layer 80, a touch layer 902 located on the cathode layer 80, and a plurality of black matrix portions 601 located on the touch layer 902 can be formed in sequence on the light-emitting layer, and the touch layer 902 includes a plurality of touch electrodes 9021. After forming the color resist layer, a flat layer 901 can be formed on the color resist layer and the plurality of black matrix portions 601. The specific arrangement of the cathode layer 80, the touch layer 902, the black matrix portion 601, and the touch electrodes 9021 can refer to the relevant description above.

[0079] The step of forming the first type of color resist portion in step S3 may include but is not limited to the following steps, and in combination with Figure 7 The scene diagram is used as a reference.

[0080] S301, forming a first type of color block on a side of the first type of light emitting portion away from the substrate.

[0081] Specifically, Figure 7 As shown, it can be understood here that a plurality of color resist blocks 702 are formed on the side of the first type of light-emitting portion 2011 away from the substrate 10, and the plurality of color resist blocks 702 are used to form a plurality of color resist portions 301, wherein the plurality of color resist blocks 702 are also used to form a color resist block including a shielding portion 401, which is called a first type of color resist block 7021, that is, the constituent material of each color resist block 702 can be the same as the constituent material of the portion of the corresponding color resist portion 301 excluding the shielding portion 401.

[0082] S302 , processing the first type of color resist block by using laser from a side of the first type of color resist block away from the substrate to form the shielding portion in the first type of color resist block.

[0083] Specifically, Figure 7 As shown, the first type of color block 7021 can be irradiated with a laser on the side away from the substrate 10 for carbonization treatment, wherein the selection of the laser for carbonization treatment can refer to the above combined Figure 4 Specifically, the energy, irradiation time and irradiation area of ​​the laser can be selected according to actual conditions, and should avoid burning the flat layer 901 and other film layers on the color resist layer.

[0084] In combination with the above discussion, the first type of color resist block 7021 can be carbonized to form the first type of color resist portion 3011 including the shielding portion 401, and the plurality of color resist blocks 702 that have not been carbonized are retained as the plurality of color resist portions 301. Of course, in combination with the above discussion, the carbonization treatment can be performed after the flat layer 901 is formed.

[0085] The present invention provides a display panel and a manufacturing method thereof, and a mobile terminal, wherein the display panel includes: a substrate; a light-emitting layer, located on the substrate, the light-emitting layer including a plurality of light-emitting parts, at least one of which is a first-type light-emitting part; a color-resistance layer, located on a side of the light-emitting layer away from the substrate, the color-resistance layer including a plurality of color-resistance parts corresponding to the plurality of light-emitting parts one by one, each of the color-resistance parts and the corresponding light-emitting part being arranged opposite to each other, at least one of the color-resistance parts being a first-type color-resistance part arranged opposite to the first-type light-emitting part; wherein the first-type color-resistance part includes a shielding part, and the shielding part is used to block light from passing through. The present invention achieves the function of blocking the light emitted by the first-type color-resistance part from passing through by setting the first-type color-resistance part to include a shielding part for blocking light from passing through, thereby avoiding the use of a laser to penetrate the color-resistance part to eliminate bright spots, thereby improving the success rate of pixel repair.

[0086] The display panel, the structure of the mobile terminal and the method for manufacturing the display panel provided in the embodiments of the present invention are introduced in detail above. Specific examples are used in this article to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the technical solutions and core ideas of the present invention. Ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some of the technical features therein with equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A display panel, characterized in that: include: substrate; A light-emitting layer, located on the substrate, the light-emitting layer comprises a plurality of light-emitting parts, at least one of the light-emitting parts is a first type of light-emitting part; a color resist layer, located on a side of the light-emitting layer away from the substrate, the color resist layer comprising a plurality of color resist portions corresponding to the plurality of light-emitting portions one by one, each of the color resist portions being arranged opposite to the corresponding light-emitting portion, and at least one of the color resist portions being a first type of color resist portion arranged opposite to the first type of light-emitting portion; Wherein, the first type of color blocking portion includes a blocking portion, and the blocking portion is used to block light from passing through; The constituent material of the shielding portion includes carbon element, and the constituent material of the shielding portion is a material obtained by carbonizing the constituent material of the portion of the first type of color resist portion close to the substrate.

2. The display panel according to claim 1, wherein: The shielding portion is located in a region of the corresponding first-type color-resist portion away from the light-emitting layer.

3. The display panel according to claim 1, wherein: The display panel further includes: A black matrix layer is provided on the same layer as the color resist layer, wherein the black matrix layer comprises a plurality of black matrix portions, wherein the angle between the side and the bottom of the black matrix portion is an acute angle, and one color resist portion is filled between two adjacent black matrix portions; Wherein, each side portion of the shielding portion is coplanar with an adjacent side portion of an adjacent color-resist portion.

4. The display panel according to claim 1, wherein: The first type of light emitting portion includes an abnormal area, and the shielding portion is arranged opposite to the abnormal area in the corresponding first type of light emitting portion.

5. The display panel according to claim 1, wherein: The display panel further includes: an anode layer, located on a side of the light-emitting layer close to the substrate, the anode layer comprising a plurality of anode portions corresponding one to one to the plurality of light-emitting portions; The cathode layer is located on a side of the light-emitting layer away from the substrate, and the cathode layer at least covers a side of the first type of light-emitting portion away from the substrate.

6. The display panel according to claim 5, wherein: At least one of the light-emitting parts is a second type of light-emitting part, the cathode layer is provided with at least one opening, and the opening and the second type of light-emitting part are arranged opposite to each other.

7. The display panel according to claim 1, wherein: The plurality of color-resistance portions corresponding one to one to the plurality of light-emitting portions with different light-emitting colors have a transmittance greater than 60% for light with a wavelength greater than 850 nanometers.

8. The display panel according to claim 1, wherein: The display panel further includes: The touch layer is located on a side of the color resist layer close to the light emitting layer. The touch layer includes a plurality of touch electrodes. The touch electrodes are located between two adjacent light emitting portions.

9. A mobile terminal, characterized in that: The mobile terminal comprises a terminal body and a display panel as claimed in any one of claims 1 to 8, wherein the terminal body and the display panel are integrated into one body.

10. A method for manufacturing a display panel, characterized in that: include: providing a substrate; forming a light-emitting layer on the substrate, wherein the light-emitting layer comprises a plurality of light-emitting portions, at least one of the light-emitting portions being a first type of light-emitting portion; A color resist layer is formed on a side of the light-emitting layer away from the substrate, the color resist layer includes a plurality of color resist portions corresponding to the plurality of light-emitting portions one by one, each of the color resist portions is arranged opposite to the corresponding light-emitting portion, at least one of the color resist portions is a first type of color resist portion arranged opposite to the first type of light-emitting portion, the first type of color resist portion includes a shielding portion, and the shielding portion is used to block light from passing through; The step of forming the first type of color resist portion includes: Forming a first type of color block on a side of the first type of light emitting portion away from the substrate; Processing the first type of color resist block by laser from a side of the first type of color resist block away from the substrate to form the shielding portion in the first type of color resist block; The constituent material of the shielding portion includes carbon element, and the constituent material of the shielding portion is a material obtained by carbonizing the constituent material of the portion of the first type of color resist portion close to the substrate.

Images