WO2017219462A1 - Oled显示屏 - Google Patents

Oled显示屏 Download PDF

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Publication number
WO2017219462A1
WO2017219462A1 PCT/CN2016/094896 CN2016094896W WO2017219462A1 WO 2017219462 A1 WO2017219462 A1 WO 2017219462A1 CN 2016094896 W CN2016094896 W CN 2016094896W WO 2017219462 A1 WO2017219462 A1 WO 2017219462A1
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Prior art keywords
blocking layer
light emitting
layer
substrate
light
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Ceased
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PCT/CN2016/094896
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English (en)
French (fr)
Inventor
彭海波
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wuhan China Star Optoelectronics Technology Co Ltd
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Wuhan China Star Optoelectronics Technology Co Ltd
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Application filed by Wuhan China Star Optoelectronics Technology Co Ltd filed Critical Wuhan China Star Optoelectronics Technology Co Ltd
Priority to US15/308,576 priority Critical patent/US10319800B2/en
Publication of WO2017219462A1 publication Critical patent/WO2017219462A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/10—OLED displays
    • H10K59/12—Active-matrix OLED [AMOLED] displays
    • H10K59/126—Shielding, e.g. light-blocking means over the TFTs
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/50—OLEDs integrated with light modulating elements, e.g. with electrochromic elements, photochromic elements or liquid crystal elements
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K50/00—Organic light-emitting devices
    • H10K50/80—Constructional details
    • H10K50/86—Arrangements for improving contrast, e.g. preventing reflection of ambient light
    • H10K50/865—Arrangements for improving contrast, e.g. preventing reflection of ambient light comprising light absorbing layers, e.g. light-blocking layers
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/10—OLED displays
    • H10K59/12—Active-matrix OLED [AMOLED] displays
    • H10K59/131—Interconnections, e.g. wiring lines or terminals
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/80—Constructional details
    • H10K59/8791—Arrangements for improving contrast, e.g. preventing reflection of ambient light
    • H10K59/8792—Arrangements for improving contrast, e.g. preventing reflection of ambient light comprising light absorbing layers, e.g. black layers
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K50/00—Organic light-emitting devices
    • H10K50/80—Constructional details
    • H10K50/86—Arrangements for improving contrast, e.g. preventing reflection of ambient light
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/30—Devices specially adapted for multicolour light emission
    • H10K59/35—Devices specially adapted for multicolour light emission comprising red-green-blue [RGB] subpixels

Definitions

  • the invention relates to a display screen structure, in particular to an OLED display screen.
  • various light-emitting layers are provided with various metal signal lines, such as metal signal lines used for signal transmission. Or the metal signal line of the TFT component switch; but these metal signal lines generate reflected light under the illumination of the external light source, and these reflected light greatly affect the display effect of the OLED display.
  • the existing OLED display screen is sequentially covered with a linear polarizer, a quarter wave plate and a top glass from the outside to the inside thereof; since the external light is a natural light of a non-polarized state, when the natural light is worn, After passing through the linear polarizer, if the transmission axis of the polarizer is in the vertical Y direction, the natural light transmitted through the linear polarizer will be converted into linear polarized light vibrating in the Y direction, and then the linear polarized light will be converted to the right after passing through the quarter wave plate.
  • the circularly polarized light is polarized, and the right-handed circularly polarized light is converted into left-handed circularly polarized light after being reflected by the top glass.
  • the left-handed circularly polarized light returns to the linearly polarized light in the X-direction after being returned by the quarter-wave plate, since the linear polarizer only allows the Y-direction.
  • the vibrating light passes, so the linearly polarized light in the X direction will be absorbed by the linear polarizer; while the metal signal line is placed under the top glass, the reflected light needs to pass through the top glass and the 1/4 wave plate in order to reach the linear polarized light. It is obvious that the reflected light of the metal signal line cannot be converted into the linearly polarized light in the Y direction, that is, the reflected light generated by the metal signal line will be absorbed by the linear polarizer, thereby eliminating the reflected light of the metal signal line. Purpose.
  • the linear polarizer also absorbs the light generated by the OLED display itself, thereby causing at least half of the light energy generated by the OLED display to be absorbed, which greatly reduces the luminous efficiency of the OLED display.
  • An object of the present invention is to provide an OLED display screen, which solves the problem that the existing OLED display screen is difficult to simultaneously solve the reflected light of the metal signal line and ensure the luminous efficiency.
  • the present invention provides an OLED display panel including a first substrate, a second substrate, an OLED light emitting layer, and a metal signal line, the first substrate being disposed opposite to the second substrate, the OLED
  • the light-emitting layer and the metal signal line are disposed between the first substrate and the second substrate, and a light blocking layer is disposed between the first substrate and the second substrate, and the light blocking layer is All or part of the light is disposed between the metal signal line and the first substrate, and the light blocking layer is configured to block natural light from entering and/or blocking reflected light generated by the metal signal line.
  • the light blocking layer is fixed on an inner surface of the first substrate, and a surface of the metal signal line opposite to the light blocking layer is disposed in a range covered by the light blocking layer.
  • the light blocking layer is fixed on a surface of the metal signal line opposite to the first substrate, and a surface of the metal signal line opposite to the light blocking layer is disposed within a range covered by the light blocking layer. .
  • the OLED light emitting layer is an RGB light emitting layer, and the RGB light emitting layer includes a red light emitting unit, a green light emitting unit, and a blue light emitting unit, the red light emitting unit, the green light emitting unit, and the blue light emitting unit.
  • the units are arranged side by side apart from one another.
  • a mounting slot is formed between each of the red light emitting unit, the green light emitting unit, and the blue light emitting unit, and the metal signal line is disposed in the mounting groove.
  • the light blocking layer is fixed on an inner surface of the first substrate, the position of the light blocking layer corresponds to a position of the mounting groove, and the light blocking layer is embedded in the mounting groove, the metal signal A surface of the line opposite the light blocking layer is disposed within a range covered by the light blocking layer.
  • the light blocking layer is disposed in the mounting groove, and the light blocking layer is fixed on a surface of the metal signal line opposite to the first substrate, wherein the metal signal line is opposite to the light blocking layer The surface is placed within the coverage of the light blocking layer.
  • the OLED light emitting layer is an RGB light emitting layer, and the RGB light emitting layer includes a red light emitting unit, a green light emitting unit, and a blue light emitting unit, the red light emitting unit, the green light emitting unit, and the blue light emitting unit.
  • the cells are arranged side by side apart from each other; the light blocking layer is fixed on an inner surface of the first substrate, and a surface of the metal signal line opposite to the light blocking layer is disposed in a range covered by the light blocking layer.
  • the OLED light emitting layer is an RGB light emitting layer
  • the RGB light emitting layer includes a red light emitting layer.
  • a light unit, a green light emitting unit, and a blue light emitting unit wherein the red light emitting unit, the green light emitting unit, and the blue light emitting unit are arranged side by side apart;
  • the light blocking layer is fixed on the metal signal line and the On a surface opposite to the first substrate, a surface of the metal signal line opposite to the light blocking layer is disposed within a range covered by the light blocking layer.
  • the light blocking layer is a filter, a color microelectronic printing layer or a flat layer
  • the polarizer since the polarizer is disposed on the surface of the OLED display, the polarizer absorbs the light energy generated by the OLED light-emitting layer, thereby causing the luminous efficiency of the OLED display to be greatly reduced; in order to solve this problem, the present invention does not
  • the polarizer is not only simple in structure, but also low in cost, and there is no longer a problem that the polarizer absorbs the light energy of the OLED display, thereby greatly improving the luminous efficiency of the OLED display.
  • the present invention provides the first substrate and the second substrate opposite to each other, and the OLED light emitting layer, the metal signal line and the light blocking layer are disposed on the first substrate and the second substrate.
  • the light blocking layer since all or part of the light blocking layer is disposed between the metal signal line and the first substrate, the light blocking layer will block the metal signal line; for example, some light blocking layer can block light penetration. Therefore, the natural light of the outside world cannot penetrate the light blocking layer after passing through the first substrate. Since natural light cannot penetrate the light blocking layer, naturally there is no natural light reflected from the surface of the metal signal line.
  • the present invention improves the luminous efficiency of the OLED display panel and avoids the problem of reflection of the metal signal line by simultaneously removing the polarizer and providing the light blocking layer.
  • FIG. 1 is a schematic structural view of an OLED display screen according to a preferred embodiment of the present invention.
  • FIG. 2 is a schematic diagram of a disassembled structure of an OLED display screen according to a preferred embodiment of the present invention
  • FIG. 3 is a schematic diagram of a disassembled structure of an OLED display screen according to a preferred embodiment 2 of the present invention.
  • the OLED display panel of the present invention includes a first substrate 1, a second substrate 2, an OLED light emitting layer and a metal signal line 4, and the first substrate 1 is opposite to the second substrate 2
  • the OLED light-emitting layer and the metal signal line 4 are disposed between the first substrate 1 and the second substrate 2, and the first substrate 1 and the second substrate 2 are disposed between the first substrate 1 and the second substrate 2.
  • the light blocking layer 3 is disposed between the metal signal line 4 and the first substrate 1 for blocking natural light from entering and/or blocking. The reflected light generated by the metal signal line 4 is emitted.
  • the surface of the OLED display screen is provided with a polarizer to absorb the reflected light, but the polarizer also absorbs the light energy emitted by the OLED display screen, thereby greatly Reduce the luminous efficiency of the OLED display.
  • the embodiment eliminates the problem of setting the polarizer, so that there is no longer the problem that the polarizer absorbs the light energy emitted by the OLED display screen, thereby greatly improving the luminous efficiency of the OLED display.
  • the present embodiment is on the first substrate 1 and the second substrate.
  • a light blocking layer 3 is disposed between the two, and all or part of the light blocking layer 3 is disposed between the metal signal line 4 and the first substrate 1.
  • the light blocking layer 3 is used to block natural light injection and/or Blocking the reflected light generated by the metal signal line 4, thereby solving the problem that the metal signal line 4 generates reflected light; in addition, the light blocking layer 3 has various options, such as the light blocking layer 3 may be An opaque material, such that natural light cannot illuminate the metal signal line 4, so that there is no problem that the metal signal line 4 generates reflected light, and for example, the light blocking layer 3 can be a specific filter. The filter can absorb the reflected light generated by the metal signal line 4, thereby solving the problem that the metal signal line 4 generates reflected light; that is, the core of the embodiment is performed from the outside and/or the inside by using the light blocking layer 3. Block light, and Which material is selected to form the light blocking layer 3, and those skilled in the art can select according to actual needs.
  • the light blocking layer 3 may have the problem of absorbing the light energy of the OLED display panel itself, the amount of absorption of the light blocking layer 3 is much smaller than that of the polarizer because the polarizer covers the surface of the entire OLED display screen, so the polarizer is The light energy generated by the entire OLED display panel is absorbed, and the light blocking layer 3 is only disposed above the metal signal line 4, that is, the area of the light blocking layer 3 is only for the metal signal line 4.
  • the occlusion is only slightly larger than the area of the metal signal line 4, so that the area of the light blocking layer 3 is much smaller than that of the prior art, so that even the light blocking layer 3 may absorb the light energy of the OLED display.
  • the absorption amount is very limited, it can be neglected, that is, after the light blocking layer 3 is provided, the luminous efficiency of the OLED display panel is greatly improved.
  • a preferred embodiment of the present invention is as shown in FIG. 2, the light blocking layer 3 is fixed on an inner surface of the first substrate 1, and a surface of the metal signal line 4 opposite to the light blocking layer 3 is placed on the surface.
  • the light blocking layer 3 covers the range.
  • the light blocking layer 3 needs to be fixed between the first substrate 1 and the second substrate 2, but the space between the first substrate 1 and the second substrate 2 is very small, so how to effectively use the space to block light
  • the fixing of the layer 3 is an important problem; in order to solve this problem, the light blocking layer 3 is directly fixed on the inner surface of the first substrate 1, and the surface of the metal signal line 4 opposite to the light blocking layer 3 is placed in the light blocking.
  • the layer 3 covers the range, so that the light blocking layer 3 can be fixed and shielded from the metal signal line 4 without adding another mating structure, thereby improving the space utilization between the first substrate 1 and the second substrate 2.
  • a preferred embodiment of the present invention is as shown in FIG. 3, the light blocking layer 3 is fixed on a surface of the metal signal line 4 opposite to the first substrate 1, the metal signal line 4 and the light blocking layer. The opposite surfaces are placed within the range covered by the light blocking layer 3.
  • the light blocking layer 3 needs to be fixed between the first substrate 1 and the second substrate 2, but the space between the first substrate 1 and the second substrate 2 is very small, so how to effectively use the space to block light
  • the fixing of the layer 3 is an important problem; in order to solve this problem, the light blocking layer 3 is directly fixed on the surface of the metal signal line 4 opposite to the first substrate 1 so that the metal signal line 4 and the light blocking layer 3 are fixed.
  • the opposite surface is disposed in the range covered by the light blocking layer 3, so that the light blocking layer 3 can be fixed and shielded from the metal signal line 4 without adding another matching structure, thereby improving the first substrate 1 and the second substrate 2 Space utilization between.
  • the OLED light emitting layer is an RGB light emitting layer (R is RED, representing red, G is GREEN, representing green, B is BLUE, representing blue), and the RGB light is emitted.
  • the layer includes a red light emitting unit 51, a green light emitting unit 52, and a blue light emitting unit 53, and the red light emitting unit 51, the green light emitting unit 52, and the blue light emitting unit 53 are arranged side by side apart from each other.
  • OLED luminescent layers have a variety of options, such as:
  • An RGB light-emitting layer having a red light-emitting unit 51, a green light-emitting unit 52, and a blue light-emitting unit 53 that independently emit red, green, and blue light, can make the display effect bright and bright;
  • white light + color filter that is, through white light as a backlight, white light passes through the color filter and becomes red, green and blue light, the cost is relatively low, but the display effect is poor;
  • blue light + color converter that is, the emitted blue light through the color converter into red, green, blue three-color light, but the development of the color converter is more difficult, thus limiting its application range.
  • the embodiment preferably uses RGB illumination. Layer to maximize the display quality of the OLED display.
  • FIGS. 1 to 3 A preferred embodiment of the present invention is as shown in FIGS. 1 to 3, in which a mounting groove is formed between each of the red light emitting unit 51, the green light emitting unit 52, and the blue light emitting unit 53, and the metal signal line is formed. 4 is disposed in the installation slot.
  • the RGB light-emitting layer almost completely occupies all the space between the first substrate 1 and the second substrate 2, so how to reasonably route the metal signal line 4 in a limited space is an important link;
  • the red light emitting unit 51, the green light emitting unit 52, and the blue light emitting unit 53 must be kept in a state of being separated from each other, so that red light is emitted. There is a gap between the unit 51, the green light emitting unit 52, and the blue light emitting unit 53.
  • the red light emitting unit 51, the green light emitting unit 52, and The gap between the blue light-emitting units 53 serves as a mounting groove, so that the metal signal line 4 can be disposed in the mounting groove, that is, no additional space is reserved for the metal signal line 4 to be routed, and the wiring is reasonable, and the wiring is larger.
  • a preferred embodiment of the present invention is as shown in FIG. 2, the light blocking layer 3 is fixed on an inner surface of the first substrate 1, and the position of the light blocking layer 3 corresponds to a position of the mounting slot, the blocking The surface of the metal signal line 4 opposite to the light blocking layer 3 is placed in the mounting groove, and the surface of the light blocking layer 3 is placed in the range covered by the light blocking layer 3.
  • the light blocking layer 3 needs to be fixed between the first substrate 1 and the second substrate 2, but the space between the first substrate 1 and the second substrate 2 is very small, so how to effectively use the space to block Fixing the optical layer 3 is an important problem; in order to solve this problem, the light blocking layer 3 is directly fixed on the inner surface of the first substrate 1 and the light blocking layer 3 is embedded in the mounting groove, so the light blocking layer 3 is The fixing and the shielding of the metal signal line 4 are realized without adding other mating structures, and the space between the first substrate 1 and the second substrate 2 is not required to be increased, thereby improving the first substrate 1 and the second substrate 2 Space utilization between.
  • the light blocking layer 3 is disposed in the mounting groove, and the light blocking layer is fixed to the metal signal line 4 opposite to the first substrate 1. On the surface, a surface of the metal signal line 4 opposite to the light blocking layer 3 is placed in a range covered by the light blocking layer 3.
  • the light blocking layer 3 needs to be fixed between the first substrate 1 and the second substrate 2, but the space between the first substrate 1 and the second substrate 2 is very small, so how to effectively use the space to block light
  • the fixing of the layer 3 is an important problem; in order to solve this problem, in the embodiment, the light blocking layer 3 is directly disposed in the mounting groove, and the surface of the metal signal line 4 opposite to the light blocking layer 3 is placed on the light blocking layer 3 to cover In the range of the light blocking layer 3, the fixing and the shielding of the metal signal line 4 are realized without adding other matching structures, and the space between the first substrate 1 and the second substrate 2 is not required to be increased, thereby improving The space utilization between the first substrate 1 and the second substrate 2.
  • the OLED light emitting layer is an RGB light emitting layer
  • the RGB light emitting layer includes a red light emitting unit 51, a green light emitting unit 52, and a blue light emitting unit 53, and the red light emitting unit
  • the unit 51, the green light emitting unit 52 and the blue light emitting unit 53 are arranged side by side apart from each other; the light blocking layer 3 is fixed on the inner surface of the first substrate 1, the metal signal line 4 and the block The opposite surface of the light layer 3 is placed within the range covered by the light blocking layer 3.
  • the display effect can be ensured to be bright and bright, so as to maximize the display image quality of the OLED display screen.
  • the light-blocking layer 3 is directly fixed on the first substrate 1
  • the inner surface of the metal signal line 4 and the light blocking layer 3 are disposed in the range covered by the light blocking layer 3, so that the light blocking layer 3 can be fixed and shielded from the metal signal line 4 without adding another matching structure. Thereby, the space utilization between the first substrate 1 and the second substrate 2 is improved.
  • the OLED light emitting layer is an RGB light emitting layer
  • the RGB light emitting layer includes a red light emitting unit 51, a green light emitting unit 52, and a blue light emitting unit 53, and the red light emitting unit
  • the unit 51, the green light emitting unit 52, and the blue light emitting unit 53 are mutually a light-dissipating layer 3 is fixed on a surface of the metal signal line 4 opposite to the first substrate 1, and a surface of the metal signal line 4 opposite to the light-blocking layer 3 is placed on the surface
  • the light blocking layer 3 covers the range.
  • the display effect can be ensured to be bright and bright, so as to maximize the display image quality of the OLED display screen; and in this embodiment, the light-blocking layer 3 is directly fixed on the metal signal line 4 On the surface opposite to the first substrate 1, the surface of the metal signal line 4 opposite to the light blocking layer 3 is placed in the range covered by the light blocking layer 3, so that the light blocking layer 3 can be fixed without adding other matching structures.
  • the occlusion of the metal signal line 4 increases the space utilization between the first substrate 1 and the second substrate 2.
  • the light blocking layer 3 is a filter, a color microelectronic printed layer or a flat layer.
  • a filter is a commonly used optical device that can pass light of a specific wavelength and block light of a specific wavelength, so that natural light can be prevented from entering and/or by using a suitable filter as the light blocking layer 3. Or the reflected light of the metal signal line 4 is blocked from being emitted.
  • the color microelectronic printing layer is also called BM.
  • BM The full name of BM is Black Matrix, which is a resin material, which is characterized by extremely low light transmittance. Therefore, the use of color microelectronic printing layer as the light blocking layer 3 can block natural light. The reflected light that enters and/or blocks the metal signal line 4 is emitted.
  • the flat layer is also called OC, OC is overcoating, which is a resin material, which has the function of improving the metal reflection, and the material will have a flat surface after curing, and the LCD generally has a high or low surface on the CF or TFT surface.
  • a flat layer is usually added to the LCD to achieve surface flattening; in this embodiment, the flat layer is transferred to the OLED display screen. Since the flat layer is a completely transparent material, the flat layer does not affect the light.
  • the light-blocking layer 3 made of a flat layer can improve the reflection of the metal signal line 4 without affecting the light transmission.
  • an OLED display panel includes a first substrate 1, a second substrate 2, an RGB light emitting layer, a metal signal line 4, and a light blocking layer 3; the first substrate 1 and the second substrate 2
  • the RGB light emitting layer is disposed between the first substrate 1 and the second substrate 2, and the RGB light emitting layer includes a red light emitting unit 51, a green light emitting unit 52, and a blue light emitting unit 53, the red light emitting unit 51, the green light emitting unit 52, and the blue light emitting unit 53 are arranged separately from each other on the same horizontal plane such that the red light A mounting slot is formed between each of the light emitting unit 51, the green light emitting unit 52, and the blue light emitting unit 53.
  • the metal signal line 4 is disposed in the mounting slot; the light blocking layer 3 is disposed in the mounting slot.
  • the light blocking layer 3 is fixed on a surface of the metal signal line 4 opposite to the first substrate 1 , and a surface of the metal signal line 4 opposite to the light blocking layer 3 is placed on the light blocking layer 3 Within the scope of coverage; wherein the light blocking layer 3 is preferably any one of a filter, a color microelectronic printed layer or a flat layer.
  • the light blocking layer 3 is first formed on the lower surface of the first substrate 1, and then the light blocking layer 3 is embedded in the mounting groove.
  • an OLED display panel includes a first substrate 1, a second substrate 2, an RGB light emitting layer, a metal signal line 4, and a light blocking layer 3; the first substrate 1 and the second substrate 2
  • the RGB light emitting layer is disposed between the first substrate 1 and the second substrate 2, and the RGB light emitting layer includes a red light emitting unit 51, a green light emitting unit 52, and a blue light emitting unit 53, and the red light emitting
  • the unit 51, the green light emitting unit 52, and the blue light emitting unit 53 are arranged apart from each other on the same horizontal plane such that a mounting groove is formed between each of the red light emitting unit 51, the green light emitting unit 52, and the blue light emitting unit 53.
  • the metal signal line 4 is disposed in the mounting groove; the light blocking layer 3 is fixed on the inner surface of the first substrate 1, and the position of the light blocking layer 3 corresponds to the position of the mounting slot, a surface of the metal signal line 4 opposite to the light blocking layer 3 is disposed in the mounting groove, and a surface of the light blocking layer 3 is disposed in the range covered by the light blocking layer 3; wherein the light blocking layer 3 is preferably filtered. Any of a light sheet, a color microelectronic printed layer, or a flat layer.
  • the light blocking layer 3 is first disposed in the mounting groove, and the light blocking layer 3 is placed above the metal signal line 4, and then the first substrate 1 is bonded to the RGB light emitting layer.
  • the final finished structure of the first embodiment and the preferred embodiment 2 is substantially identical, the main difference being that the fixing positions of the light blocking layer 3 are different, thereby causing different manufacturing processes. Due to the special performance of the light blocking layer 3, it is possible to block the natural light from entering and/or blocking the reflected light of the metal signal line 4, which not only solves the problem of reflection of the metal signal line 4, but also greatly improves the elimination of the polarizer. The luminous efficiency of the OLED display.

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  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Electroluminescent Light Sources (AREA)

Abstract

一种OLED显示屏，属于OLED显示屏领域的技术方案，其包括第一基板(1)、第二基板(2)、OLED发光层和金属信号线(4)，所述第一基板(1)与所述第二基板(2)相对布置，所述OLED发光层和所述金属信号线(4)均设于所述第一基板(1)与所述第二基板(2)之间，所述第一基板(1)与所述第二基板(2)之间设有挡光层(3)，所述挡光层(3)的全部或部分设于所述金属信号线(4)与所述第一基板(1)之间，所述挡光层(3)用于阻挡自然光射入和/或阻挡所述金属信号线(4)产生的反射光射出。本方案能够通过挡光层(3)对金属信号线(4)进行遮挡，以此吸收金属信号线(4)的反射光，免去设置偏光片，不但结构简单，而且不会对OLED自身的发光进行吸收，大大提高了OLED显示屏的发光效率。

Description

OLED显示屏
本申请要求于2016年6月20日提交中国专利局、申请号为201610447016.6、发明名称为“OLED显示屏”的中国专利申请的优先权，上述在先申请的内容以引入的方式并入本文本中。
技术领域
本发明涉及一种显示屏结构，特别涉及一种OLED显示屏。
背景技术
在现有的OLED(即Organic Light-Emitt i ng Diode,又叫有机发光二极管)显示屏中，其发光层上设有各种各样的金属信号线，譬如用作信号传输的金属信号线，又或者TFT元器件开关的金属信号线；但是这些金属信号线在外界光源的照射下会产生反射光，这些反射光极大的影响了OLED显示屏的显示效果。
为了解决这个问题，现有的OLED显示屏在其表面从外到内依序覆盖有线性偏光片、1/4波片和顶层玻璃；由于外界的光线为非偏振状态的自然光，所以当自然光穿过线性偏光片后，若偏光片透射轴为竖直Y方向,那么透过线性偏光片的自然光会转变为在Y方向振动的线偏光，然后线偏光经过1/4波片后会转变为右旋圆偏光，而右旋圆偏光经顶层玻璃反射后会变成左旋圆偏光，左旋圆偏光经1/4波片返回后会变成X方向振动的线偏光，由于线性偏光片仅允许Y方向振动的光通过，所以X方向振动的线偏光将被线性偏光片吸收；而金属信号线置于顶层玻璃之下，其反射光需要依次穿过顶层玻璃、1/4波片后才能到达线性偏光片，显然，金属信号线的反射光并不能变为Y方向振动的线偏光，即金属信号线产生的反射光将会被线性偏光片吸收，从而达到消除金属信号线反射光的目的。
但正因如此，所以线性偏光片还会对OLED显示屏自身产生的光线进行吸收，从而导致OLED显示屏产生的光能至少有一半被吸收，大大降低了OLED显示屏的发光效率。
发明内容
本发明的目的在于提供一种OLED显示屏，该OLED显示屏解决了现有OLED显示屏难以同时解决金属信号线反射光和保证发光效率的问题。
为了解决上述技术问题，本发明提供了一种OLED显示屏，包括第一基板、第二基板、OLED发光层和金属信号线，所述第一基板与所述第二基板相对布置，所述OLED发光层和所述金属信号线均设于所述第一基板与所述第二基板之间，所述第一基板与所述第二基板之间设有挡光层，所述挡光层的全部或部分设于所述金属信号线与所述第一基板之间，所述挡光层用于阻挡自然光射入和/或阻挡所述金属信号线产生的反射光射出。
其中，所述挡光层固定在所述第一基板的内表面，所述金属信号线与所述挡光层相对的表面置于所述挡光层覆盖的范围内。
其中，所述挡光层固定在所述金属信号线与所述第一基板相对的表面上，所述金属信号线与所述挡光层相对的表面置于所述挡光层覆盖的范围内。
其中，所述OLED发光层为RGB发光层，所述RGB发光层包括红光发光单元、绿光发光单元和蓝光发光单元，所述红光发光单元、所述绿光发光单元和所述蓝光发光单元相互并排分离布置。
其中，所述红光发光单元、所述绿光发光单元和所述蓝光发光单元各者之间形成有安装槽，所述金属信号线设于所述安装槽内。
其中，所述挡光层固定在所述第一基板的内表面，所述挡光层的位置与所述安装槽的位置对应，所述挡光层嵌入所述安装槽内，所述金属信号线与所述挡光层相对的表面置于所述挡光层覆盖的范围内。
其中，所述挡光层设于所述安装槽内，所述挡光层固定在所述金属信号线与所述第一基板相对的表面上，所述金属信号线与所述挡光层相对的表面置于所述挡光层覆盖的范围内。
其中，所述OLED发光层为RGB发光层，所述RGB发光层包括红光发光单元、绿光发光单元和蓝光发光单元，所述红光发光单元、所述绿光发光单元和所述蓝光发光单元相互并排分离布置；所述挡光层固定在所述第一基板的内表面，所述金属信号线与所述挡光层相对的表面置于所述挡光层覆盖的范围内。
其中，所述OLED发光层为RGB发光层，所述RGB发光层包括红光发 光单元、绿光发光单元和蓝光发光单元，所述红光发光单元、所述绿光发光单元和所述蓝光发光单元相互并排分离布置；所述挡光层固定在所述金属信号线与所述第一基板相对的表面上，所述金属信号线与所述挡光层相对的表面置于所述挡光层覆盖的范围内。
其中，所述挡光层为滤光片、彩色微电子印刷层或平坦层
在现有技术中，由于OLED显示屏表面设置了偏光片，所以偏光片会对OLED发光层产生的光能进行吸收，从而导致OLED显示屏的发光效率大大降低；为了解决这个问题，本发明不再设置偏光片，不但结构简单、成本下降，而且不再存在偏光片吸收OLED显示屏自身光能的问题，从而大大提高了OLED显示屏的发光效率。另外，为了同时解决金属信号线的反光问题，本发明设置了上下相对的第一基板和第二基板，并将OLED发光层、金属信号线和挡光层设于第一基板和第二基板之间，其中，由于挡光层的全部或部分设于金属信号线与第一基板之间，所以挡光层将会对金属信号线进行光遮挡；譬如某些挡光层能够阻挡光线穿透，所以外界的自然光穿过第一基板后便无法穿透挡光层，既然自然光无法穿透挡光层，那自然便不存在自然光从金属信号线表面反射的情况。综上所述，本发明由于同时去除了偏光片和设置了挡光层，从而提高了OLED显示屏的发光效率，以及避免了金属信号线的反光问题。
附图说明
为了更清楚地说明本发明的技术方案，下面将对实施方式中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施方式，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1是本发明优选实施方式提供的OLED显示屏的结构示意图；
图2是本发明优选实施方式一提供的OLED显示屏的拆解结构示意图；
图3是本发明优选实施方式二提供的OLED显示屏的拆解结构示意图。
具体实施方式
下面将结合本发明实施方式中的附图，对本发明实施方式中的技术方案进 行清楚、完整地描述。
从图1至3可知，本发明所述的OLED显示屏，包括第一基板1、第二基板2、OLED发光层和金属信号线4，所述第一基板1与所述第二基板2相对布置，所述OLED发光层和所述金属信号线4均设于所述第一基板1与所述第二基板2之间，所述第一基板1与所述第二基板2之间设有挡光层3，所述挡光层3的全部或部分设于所述金属信号线4与所述第一基板1之间，所述挡光层3用于阻挡自然光射入和/或阻挡所述金属信号线4产生的反射光射出。
在实际应用过程中，为了消除金属信号线4产生的反射光，OLED显示屏的表面会设置偏光片对反射光进行吸收，但是偏光片同样会对OLED显示屏发出的光能进行吸收，从而大大降低了OLED显示屏的发光效率。
为了解决这个问题，本实施方式取消设置偏光片，所以不再存在偏光片对OLED显示屏发出光能进行吸收的问题，从而大大提高了OLED显示屏的发光效率。
但由于取消设置偏光片，金属信号线4产生的反射光将会射至OLED显示屏外，从而影响OLED显示屏的显示效果；为了解决这个问题，本实施方式在第一基板1与第二基板2之间设置了挡光层3，挡光层3的全部或部分设于金属信号线4与第一基板1之间，其中，所述的挡光层3用于阻挡自然光射入和/或阻挡所述金属信号线4产生的反射光射出，从而解决了金属信号线4产生反射光射出的问题；另外，所述的挡光层3具有多种多样的选择，譬如挡光层3可以是一种不透光的材质，这样自然光便无法对金属信号线4进行照射，从而便不存在金属信号线4产生反射光射出的问题，又譬如挡光层3可以是特定的滤光片，该滤光片可以对金属信号线4产生的反射光进行吸收，从而也解决了金属信号线4产生反射光射出的问题；即本实施方式的核心是利用挡光层3从外和/或内进行挡光，而选择何种材质制成挡光层3，本领域技术人员根据实际需要选择便可。
需要指出，挡光层3虽然可能存在吸收OLED显示屏自身光能的问题，但其吸收的量是远远小于偏光片的，因为偏光片是覆盖于整个OLED显示屏的表面，所以偏光片是对整个OLED显示屏产生的光能进行吸收，而挡光层3仅是设于金属信号线4的上方，即挡光层3的面积是仅仅可以对金属信号线4 进行遮挡，或者仅仅比金属信号线4的面积稍大，从而说明挡光层3的面积是要远小于现有技术设置的偏光片，所以即使挡光层3可能存在吸收OLED显示屏自身光能的情况，由于其吸收量十分有限，基本可以忽略，即设置挡光层3后依然是大大提高了OLED显示屏的发光效率。
本发明的优选实施方式如图2所示，所述挡光层3固定在所述第一基板1的内表面，所述金属信号线4与所述挡光层3相对的表面置于所述挡光层3覆盖的范围内。
在实际应用过程中，挡光层3需要固定在第一基板1和第二基板2之间，但是第一基板1和第二基板2之间的空间非常小，所以如何有效利用空间对挡光层3进行固定是一个重要的问题；为了解决这个问题，本实施方式将挡光层3直接固定在第一基板1的内表面，金属信号线4与挡光层3相对的表面置于挡光层3覆盖的范围内，所以挡光层3无需新增其他配合结构便实现了固定和对金属信号线4的遮挡，从而提高了第一基板1和第二基板2之间的空间利用率。
本发明的优选实施方式如图3所示，所述挡光层3固定在所述金属信号线4与所述第一基板1相对的表面上，所述金属信号线4与所述挡光层3相对的表面置于所述挡光层3覆盖的范围内。
在实际应用过程中，挡光层3需要固定在第一基板1和第二基板2之间，但是第一基板1和第二基板2之间的空间非常小，所以如何有效利用空间对挡光层3进行固定是一个重要的问题；为了解决这个问题，本实施方式将挡光层3直接固定在金属信号线4与第一基板1相对的表面上，使得金属信号线4与挡光层3相对的表面置于挡光层3覆盖的范围内，所以挡光层3无需新增其他配合结构便实现了固定和对金属信号线4的遮挡，从而提高了第一基板1和第二基板2之间的空间利用率。
本发明的优选实施方式如图1至3所示，所述OLED发光层为RGB发光层(R即RED，代表红，G即GREEN，代表绿，B即BLUE，代表蓝)，所述RGB发光层包括红光发光单元51、绿光发光单元52和蓝光发光单元53，所述红光发光单元51、所述绿光发光单元52和所述蓝光发光单元53相互并排分离布置。
在实际应用过程中，OLED发光层具有多种多样的选择，譬如：
1、RGB发光层，具有独立发出红、绿、蓝光的红光发光单元51、绿光发光单元52和蓝光发光单元53，能够使得显示效果鲜艳亮丽；
2、白光+彩色滤光片，即通过白光作为背光，白光穿过彩色滤光片后变为红、绿、蓝三色光，其成本比较低廉，但是显示效果较差；
3、蓝光+色变换器，即发出的蓝光经过色变换器变成红、绿、蓝三色光，但是色变换器的开发难度较大，从而限制了其应用范围。
综上可知，随着人们生活水平的提高，对视觉享受的要求自然也是越来越高，所以提供显示画质更佳的OLED显示屏自然更为重要；为此，本实施方式优选使用RGB发光层，以最大限度提高OLED显示屏的显示画质。
本发明的优选实施方式如图1至3所示，所述红光发光单元51、所述绿光发光单元52和所述蓝光发光单元53各者之间形成有安装槽，所述金属信号线4设于所述安装槽内。
在实际应用过程中，RGB发光层几乎完全占用了第一基板1与第二基板2之间的所有空间，所以金属信号线4如何在有限的空间内合理布线是一个重要环节；需要指出，为了保证红光发光单元51、绿光发光单元52和蓝光发光单元53的正常工作，必须将红光发光单元51、绿光发光单元52和蓝光发光单元53保持在相互分离的状态，因此红光发光单元51、绿光发光单元52和蓝光发光单元53各者之间必然存在空隙，所以本实施方式为了解决金属信号线4合理布线的问题，便将红光发光单元51、绿光发光单元52和蓝光发光单元53各者之间的空隙用作安装槽，使得金属信号线4可以布置在安装槽内，即无需额外预留其他空间供金属信号线4进行布线，不但布线合理，更大大提高了OLED显示屏的结构紧凑性。
本发明的优选实施方式如图2所示，所述挡光层3固定在所述第一基板1的内表面，所述挡光层3的位置与所述安装槽的位置对应，所述挡光层3嵌入所述安装槽内所述金属信号线4与所述挡光层3相对的表面置于所述挡光层3覆盖的范围内。
在实际应用过程中，挡光层3需要固定在第一基板1和第二基板2之间，但是第一基板1和第二基板2之间的空间非常小，所以如何有效利用空间对挡 光层3进行固定是一个重要的问题；为了解决这个问题，本实施方式将挡光层3直接固定在第一基板1的内表面，且挡光层3嵌入安装槽内，所以挡光层3不但无需新增其他配合结构便实现了固定和对金属信号线4的遮挡，而且不需要增加第一基板1与第二基板2之间的空间，从而提高了第一基板1和第二基板2之间的空间利用率。
本发明的优选实施方式如图3所示，所述挡光层3设于所述安装槽内，所述挡光层固3定在所述金属信号线4与所述第一基板1相对的表面上，所述金属信号线4与所述挡光层3相对的表面置于所述挡光层3覆盖的范围内。
在实际应用过程中，挡光层3需要固定在第一基板1和第二基板2之间，但是第一基板1和第二基板2之间的空间非常小，所以如何有效利用空间对挡光层3进行固定是一个重要的问题；为了解决这个问题，本实施方式将挡光层3直接设于安装槽内，且金属信号线4与挡光层3相对的表面置于挡光层3覆盖的范围内，所以挡光层3不但无需新增其他配合结构便实现了固定和对金属信号线4的遮挡，而且不需要增加第一基板1与第二基板2之间的空间，从而提高了第一基板1和第二基板2之间的空间利用率。
本发明的优选实施方式如图3所示，所述OLED发光层为RGB发光层，所述RGB发光层包括红光发光单元51、绿光发光单元52和蓝光发光单元53，所述红光发光单元51、所述绿光发光单元52和所述蓝光发光单元53相互并排分离布置；所述挡光层3固定在所述第一基板1的内表面，所述金属信号线4与所述挡光层3相对的表面置于所述挡光层3覆盖的范围内。
综上可知，本实施方式由于应用了RGB发光层，所以能够保证显示效果鲜艳亮丽，以最大限度提高OLED显示屏的显示画质；而且本实施方式将挡光层3直接固定在第一基板1的内表面，金属信号线4与挡光层3相对的表面置于挡光层3覆盖的范围内，所以挡光层3无需新增其他配合结构便实现了固定和对金属信号线4的遮挡，从而提高了第一基板1和第二基板2之间的空间利用率。
本发明的优选实施方式如图2所示，所述OLED发光层为RGB发光层，所述RGB发光层包括红光发光单元51、绿光发光单元52和蓝光发光单元53，所述红光发光单元51、所述绿光发光单元52和所述蓝光发光单元53相互并 排分离布置；所述挡光层3固定在所述金属信号线4与所述第一基板1相对的表面上，所述金属信号线4与所述挡光层3相对的表面置于所述挡光层3覆盖的范围内。
综上可知，本实施方式由于应用了RGB发光层，所以能够保证显示效果鲜艳亮丽，以最大限度提高OLED显示屏的显示画质；而且本实施方式将挡光层3直接固定在金属信号线4与第一基板1相对的表面上，使得金属信号线4与挡光层3相对的表面置于挡光层3覆盖的范围内，所以挡光层3无需新增其他配合结构便实现了固定和对金属信号线4的遮挡，从而提高了第一基板1和第二基板2之间的空间利用率。
本发明的优选实施方式如下，所述挡光层3为滤光片、彩色微电子印刷层或平坦层。
滤光片是一种常用的光学器件，它能够对特定波长的光通过，而对特定波长的光进行阻挡，所以只要使用适合的滤光片作为挡光层3便能够阻止自然光射入和/或者阻挡金属信号线4的反射光射出。
而彩色微电子印刷层又叫BM，BM的全称是Black Matrix，它是一种树脂材料，其特点是光透过率极低，所以使用彩色微电子印刷层作为挡光层3便能够阻挡自然光射入和/或者阻挡金属信号线4的反射光射出。
平坦层又叫OC，OC即overcoating，它是一种树脂材料，该材料具有改善金属反光的作用，而且该材料固化后会呈现平坦的表面，而一般LCD在CF或者TFT表面会高低不平，所以通常会在LCD上加一层平坦层以实现表面平坦化；而本实施方式将平坦层转用至OLED显示屏上，由于平坦层是一种全透明的材料，所以平坦层不会影响光的穿透率，所以在本实施方式中增设材质为平坦层的挡光层3可以在不影响透光的基础上改善金属信号线4的反光情况。
当然，上述各个实施方式可以单独应用，也可以组合应用，其中本发明较优的两个实施方式具体如下，如图1至3所示：
优选实施方式一：
如图1和2所示，一种OLED显示屏，包括第一基板1、第二基板2、RGB发光层、金属信号线4和挡光层3；所述第一基板1与第二基板2上下相对布置；所述RGB发光层设于第一基板1与第二基板2之间，该RGB发光层包括 红光发光单元51、绿光发光单元52和蓝光发光单元53，所述红光发光单元51、绿光发光单元52和蓝光发光单元53在同一水平面上相互分离排列布置，以使得所述红光发光单元51、绿光发光单元52和蓝光发光单元53各者之间形成有安装槽，所述金属信号线4设于安装槽内；所述挡光层3设于所述安装槽内，所述挡光层固3定在所述金属信号线4与所述第一基板1相对的表面上，所述金属信号线4与所述挡光层3相对的表面置于所述挡光层3覆盖的范围内；其中，所述挡光层3优选为滤光片、彩色微电子印刷层或平坦层中的任一种。
在此实施方式中，需要先将挡光层3制作在第一基板1的下表面，然后再将挡光层3嵌入安装槽内。
优选实施方式二：
如图1和3所示，一种OLED显示屏，包括第一基板1、第二基板2、RGB发光层、金属信号线4和挡光层3；所述第一基板1与第二基板2上下相对布置；所述RGB发光层设于第一基板1与第二基板2之间，该RGB发光层包括红光发光单元51、绿光发光单元52和蓝光发光单元53，所述红光发光单元51、绿光发光单元52和蓝光发光单元53在同一水平面上相互分离排列布置，以使得所述红光发光单元51、绿光发光单元52和蓝光发光单元53各者之间形成有安装槽，所述金属信号线4设于安装槽内；所述挡光层3固定在所述第一基板1的内表面，所述挡光层3的位置与所述安装槽的位置对应，所述挡光层3嵌入所述安装槽内所述金属信号线4与所述挡光层3相对的表面置于所述挡光层3覆盖的范围内；其中，所述挡光层3优选为滤光片、彩色微电子印刷层或平坦层中的任一种。
在此实施方式中，需要先将挡光层3设于安装槽内，并使得挡光层3置于金属信号线4的上方，然后再使第一基板1与RGB发光层贴合。
综上可知，优选实施方式一和优选实施方式二的最终成品结构是基本一致的，其主要区别是挡光层3的固定位置不同，从而导致制成过程有所不同。而由于挡光层3的特殊性能，从而能够阻挡自然光射入和/或者阻挡金属信号线4的反射光射出，不但解决了金属信号线4的反光问题，也由于取消设置偏光片，而大大提高了OLED显示屏的发光效率。
以上所述是本发明的优选实施方式，应当指出，对于本技术领域的普通技 术人员来说，在不脱离本发明原理的前提下，还可以做出若干改进和润饰，这些改进和润饰也视为本发明的保护范围。

Claims (18)

  1. 一种OLED显示屏，包括第一基板、第二基板、OLED发光层和金属信号线，所述第一基板与所述第二基板相对布置，所述OLED发光层和所述金属信号线均设于所述第一基板与所述第二基板之间，其中，所述第一基板与所述第二基板之间设有挡光层，所述挡光层的全部或部分设于所述金属信号线与所述第一基板之间，所述挡光层用于阻挡自然光射入和/或阻挡所述金属信号线产生的反射光射出。
  2. 根据权利要求1所述的OLED显示屏，其中，所述挡光层为滤光片、彩色微电子印刷层或平坦层。
  3. 根据权利要求1所述的OLED显示屏，其中，所述挡光层固定在所述第一基板的内表面，所述金属信号线与所述挡光层相对的表面置于所述挡光层覆盖的范围内。
  4. 根据权利要求3所述的OLED显示屏，其中，所述挡光层为滤光片、彩色微电子印刷层或平坦层。
  5. 根据权利要求1所述的OLED显示屏，其中，所述挡光层固定在所述金属信号线与所述第一基板相对的表面上，所述金属信号线与所述挡光层相对的表面置于所述挡光层覆盖的范围内。
  6. 根据权利要求5所述的OLED显示屏，其中，所述挡光层为滤光片、彩色微电子印刷层或平坦层。
  7. 根据权利要求1所述的OLED显示屏，其中，所述OLED发光层为RGB发光层，所述RGB发光层包括红光发光单元、绿光发光单元和蓝光发光单元，所述红光发光单元、所述绿光发光单元和所述蓝光发光单元相互并排分离布置。
  8. 根据权利要求7所述的OLED显示屏，其中，所述挡光层为滤光片、彩色微电子印刷层或平坦层。
  9. 根据权利要求7所述的OLED显示屏，其中，所述红光发光单元、所述绿光发光单元和所述蓝光发光单元各者之间形成有安装槽，所述金属信号线设于所述安装槽内。
  10. 根据权利要求9所述的OLED显示屏，其中，所述挡光层为滤光片、 彩色微电子印刷层或平坦层。
  11. 根据权利要求9所述的OLED显示屏，其中，所述挡光层固定在所述第一基板的内表面，所述挡光层的位置与所述安装槽的位置对应，所述挡光层嵌入所述安装槽内，所述金属信号线与所述挡光层相对的表面置于所述挡光层覆盖的范围内。
  12. 根据权利要求11所述的OLED显示屏，其中，所述挡光层为滤光片、彩色微电子印刷层或平坦层。
  13. 根据权利要求9所述的OLED显示屏，其中，所述挡光层设于所述安装槽内，所述挡光层固定在所述金属信号线与所述第一基板相对的表面上，所述金属信号线与所述挡光层相对的表面置于所述挡光层覆盖的范围内。
  14. 根据权利要求13所述的OLED显示屏，其中，所述挡光层为滤光片、彩色微电子印刷层或平坦层。
  15. 根据权利要求1所述的OLED显示屏，其中，所述OLED发光层为RGB发光层，所述RGB发光层包括红光发光单元、绿光发光单元和蓝光发光单元，所述红光发光单元、所述绿光发光单元和所述蓝光发光单元相互并排分离布置；
    所述挡光层固定在所述第一基板的内表面，所述金属信号线与所述挡光层相对的表面置于所述挡光层覆盖的范围内。
  16. 根据权利要求15所述的OLED显示屏，其中，所述挡光层为滤光片、彩色微电子印刷层或平坦层。
  17. 根据权利要求1所述的OLED显示屏，其中，所述OLED发光层为RGB发光层，所述RGB发光层包括红光发光单元、绿光发光单元和蓝光发光单元，所述红光发光单元、所述绿光发光单元和所述蓝光发光单元相互并排分离布置；
    所述挡光层固定在所述金属信号线与所述第一基板相对的表面上，所述金属信号线与所述挡光层相对的表面置于所述挡光层覆盖的范围内。
  18. 根据权利要求17所述的OLED显示屏，其中，所述挡光层为滤光片、彩色微电子印刷层或平坦层。
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