CN102542927B - Device for removing display pixel particle effect and OLED (organic light emitting diode) display screen - Google Patents
Device for removing display pixel particle effect and OLED (organic light emitting diode) display screen Download PDFInfo
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- CN102542927B CN102542927B CN201210004339.XA CN201210004339A CN102542927B CN 102542927 B CN102542927 B CN 102542927B CN 201210004339 A CN201210004339 A CN 201210004339A CN 102542927 B CN102542927 B CN 102542927B
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Abstract
The invention provides a device11 for removing display pixel particle effect, which comprises an optical lens device 01 and a scattering device 02. The optical lens device 01 covers the front of a display pixel group 12 of an OLED (organic light emitting diode) display screen, the scattering device 02 is arranged in front of the optical lens device 01, and the optical lens device 01 is used for refracting light emitted from the display pixel group 12 to the surrounding. The invention further provides an OLED display screen, which comprises at least one OLED display module 13, a signal driving circuit 14, a power source 15, a fixing bar 16, a backing plate 17 and the device 11 for removing the display pixel particle effect. By the device for removing display pixel particle effect, the pixel fill rate is increased, the display pixel particle effect of the OLED display screen is removed, and excellent visual experience can be brought to viewers.
Description
Technical field
The present invention relates to a kind of device and the OLED display screen of eliminating display pixel grain effect, belong to display technique field.
Background technology
OLED super large resolution display wall, provides a unified information display platform, has a wide range of applications at present in electric power, traffic, the energy, telecommunications, military affairs and public safety, enterprise, broadcasting and TV etc.
OLED is self-luminescent material, without the need to using backlight, simultaneously visual angle is wide, image quality is even, reaction velocity soon, easier colorize, with simple drive circuit can reach luminous, processing procedure is simple, can be made into flexure formula panel, meet compact principle, range of application belongs to small-medium size panel.Display aspect: active illuminating, angular field of view are large; Fast response time, image stabilization; Brightness is high, rich color, resolution are high.Condition of work: driving voltage is low, energy consumption is low, can match with solar cell, integrated circuit etc.Wide adaptability: adopt glass substrate can realize large-area flat-plate display; As done substrate with flexible material, folding display can be made.
It is that the display pixel that 2 × 2 pel arrays or more pel array form is formed a team that OLED display screen adopted at present, or claim display pixel groups (light-emitting zone), each pixel reserves certain wiring area due to the needs of the aspects such as technique between forming a team, and this subregion is non-luminous region.Therefore fine and smooth not enough in the fineness of display pixel, possesses stronger granular sensation, as shown in Figure 1, as we can see from the figure, certain gap is there is between adjacent display pixel groups, wherein, l is the length of side of display pixel groups light-emitting zone, and l' is the non-luminous region width between adjacent display pixels group light-emitting zone.The existence of non-luminous region makes the fineness of display pixel fine and smooth not, has stronger granular sensation, causes display screen to produce granular effect (comprising palisade effect) etc., thus have impact on vision perception.
Summary of the invention
The object of the present invention is to provide a kind of device and the OLED display screen of eliminating display pixel grain effect, solve the granular effect problem that the gap between display pixel groups causes.
Eliminate a device for display pixel grain effect, comprising: cover the optical frames device before OLED display screen display pixel groups, and be arranged on the scattering device before described optical frames device;
Described optical frames device comprises: cover the optical microstructures light guide plate array before all display pixel groups before described OLED display screen respectively;
The bottom surface of described optical microstructures light guide plate is square, bottom center is corresponding with the center of display pixel, in the light emission side of light guide plate, on the direction that the center of light guide plate and the line of four drift angles extend, be respectively provided to a few row prism, the side of the incident side of prism is connected with light guide plate, and the direction that often row prism extends along the center of light guide plate and the line of corner arranges placement in turn;
The shape of described prism is straight cylinder, often arranges described prism vertical with described line, and the planform of the prism that the prism order on each direction is identical is identical, and the direction extended along the center of light guide plate and the line of corner arranges placement in turn;
Wherein, described optical frames device is used for being reflected to surrounding by the light that described display pixel groups sends respectively.
A kind of OLED display screen, comprises at least one OLED display module and signal drive circuit, power supply, fixed strip and rear shrouding, also comprises the device of above-mentioned elimination display pixel grain effect.
Compared with prior art, technology of the present invention is by the luminescence of optical frames device expansion pixel groups, respectively the light that display pixel groups sends is reflected to surrounding, cover the gap between display pixel groups, improve pixel filling rate, then by scattering device, scattering is carried out to light, strengthen uniformity coefficient and the contrast of OLED display screen, make light softer, thus eliminate OLED display screen display pixel grain effect, make beholder obtain splendid visual enjoyment.
Accompanying drawing explanation
Fig. 1 is the schematic diagram in the gap between the adjacent display pixel groups 12 of OLED display screen;
It is the structural representation of the device of elimination display pixel grain effect of the present invention shown in Fig. 2 and Fig. 3;
Fig. 4 is the 3-D view of the plano-convex lens 011 in embodiment;
Fig. 5 is the schematic diagram that the plano-convex lens 011 in embodiment is corresponding with display pixel groups;
Fig. 6 is the A-A cut-open view in Fig. 5;
Fig. 7 is the structural representation of the optical microstructures light guide plate 012 in embodiment;
Fig. 8 is the A-A cut-open view in Fig. 7;
Fig. 9 is the schematic diagram that optical microstructures light guide plate 012 in embodiment expands display pixel;
Figure 10 is the light path principle figure that optical microstructures light guide plate 012 in embodiment expands display pixel;
Figure 11 is the structural representation of an embodiment of OLED display screen of the present invention;
Figure 12 is the structural representation that OLED module is connected with driving circuit.
Embodiment
Be described in detail below in conjunction with the device 11 of drawings and Examples to elimination display pixel grain effect of the present invention.
The device 11 of elimination display pixel grain effect of the present invention, comprising: cover the optical frames device 01 before OLED display screen display pixel groups 12, and is arranged on the scattering device 02 before described optical frames device 01; Wherein, described optical frames device 01 is for reflecting the light that described display pixel groups 12 sends to surrounding respectively.
See the structural representation of device 11 shown in Fig. 2 and Fig. 3 being elimination display pixel grain effect of the present invention, wherein, Fig. 2 is along the A-A cut-open view in Fig. 1, Fig. 3 is along the B-B cut-open view in Fig. 1, as we can see from the figure, the device 11 of elimination display pixel grain effect of the present invention mainly utilizes optical frames device 01 to be reflected to surrounding by the light that OLED display screen display pixel groups 12 sends, thus the image of the display pixel groups 12 making beholder watch obtains expansion, mask the dark space that the space between display pixel groups 12 is formed, image in beholder's vision is then continuous print, reach the object of the grain effect eliminating display pixel.
For scattering device 02, be mainly used in carrying out scattering to light, strengthen the contrast of OLED display screen, make light softer, the frosted glass of simple scattering process can have been adopted, containing the diffuser screen of micro-scattering particles, or contain the optical screen (comprising black streaking screen, cylindrical mirror screen or glass bead screen) of micro optical structure.
For optical frames device 01, be mainly used in respectively the light that display pixel groups 12 sends being reflected to surrounding, below enumerate two embodiments of optical frames device 01.
Embodiment one:
Optical frames device 01 comprises plano-convex lens 011 array before all display pixel groups 12 before covering OLED display screen respectively, shown in Figure 4, Fig. 4 is the 3-D view of plano-convex lens 011, the bottom surface of this plano-convex lens 011 is square, and the length of side is L, and edge thickness is H, wherein, L=l+l', l are display pixel groups 12 effectively light-emitting zone, and l' is the spacing between adjacent display pixels.The bottom center of each plano-convex lens 011 is corresponding with the center of display pixel groups 12, shown in Figure 5, and the corresponding plano-convex lens 011 of each dashed rectangle in figure, plano-convex lens 011 array of all display pixel groups 12 correspondences forms whole optical devices.
Shown in Figure 6, Fig. 6 is the A-A cut-open view in Fig. 5, ab, cd of display pixel groups 12, the light sent is after plano-convex lens 011 reflects, in the vision of beholder, the image seen is a'b', c'd' respectively, realize the expansion of display pixel groups 12, for plano-convex lens 011 arranges suitable radius-of-curvature, b', c' can be made just to be connected, namely expansion just covers the space between display pixel groups 12, thus eliminating the need the grain effect (comprising palisade effect) between display pixel.
In the middle of actual design, when then added power of lens is β=L/l, the picture that display pixel groups 12 imaging can just be formed with adjacent display pixel groups 12 is connected, and according to the thickness of display pixel groups 12 to display screen, arranges the radius-of-curvature of suitable plano-convex lens 011.
Such as, for the display pixel groups 12(2X2 pel array that the specification generally used at present is 2.22mm × 2.22mmOLED display screen), l=2.22mm, l'=1.45mm, L=3.67mm, according to the thickness of display pixel groups 12 to display screen, display pixel groups 12 is 2mm to the distance of plano-convex lens 011, β=1.65, the bottom surface length of side of plano-convex lens 011 is L=3.67mm, edge thickness H>0.4mm, choose H=1mm, then radius-of-curvature is 10mm.
In addition, optical frames device 01 can also comprise the lens of other type, as bent moon, biconvex lens etc., also can be Fresnel lens that focal length is identical or close etc. other there is the optical device of equal refraction, amplification.
Embodiment two:
Optical frames device 01 comprises optical microstructures light guide plate 012 array before all display pixel groups 12 before covering OLED display screen respectively, shown in Figure 7, optical microstructures light guide plate 012 comprises light guide plate 0121 and prism 0122, the bottom surface of light guide plate 0121 is square, the bottom center of incident side is corresponding with the center of display pixel groups 12, the length of side is the length of side of l(and display pixel groups 12 light-emitting zone), in the light emission side of light guide plate 0121, on the direction (in figure dotted line direction) that the center of light guide plate 0121 and the line of four drift angles extend, be respectively provided to a few row prism 0122, for the light of described display pixel groups 12 is reflected to surrounding, often the side of the incident side of row prism 0122 is connected with light guide plate 0121, the direction that often row prism 0122 extends along the center of light guide plate 0121 and the line of corner arranges placement in turn.
A kind of embodiment is the shape of described often row prism 0122 is straight cylinder, often row prism 0122 is vertical with described line, the planform of the prism that prism 0122 order on each direction is identical is identical, the direction transversely arranged placement in turn extended along the center of light guide plate 0121 and the line of corner, all prisms 0122 form four prism arrays in the direction extended along the center of light guide plate 0121 and the line of corner respectively.
Shown in Figure 8, Fig. 8 is the A-A cut-open view in Fig. 7, the principal section of the often row prism 0122 in light guide plate is rendered as the thin serrate in thick center, outside, the principal section of each prism is identical, or it is close, the prism that light guide plate 0121 is arranged is more, and the image in beholder's vision can be made finer and smoother.
Shown in Figure 9, as can be seen from the figure, the Oefg part of display pixel groups 12 is a pixel in pel array, after being provided with optical microstructures light guide plate 012, the light sent by display pixel groups 12 reflects toward surrounding, and in the vision of beholder, now seen Oefg image is Oe'f'g' respectively, realize the expansion of display pixel groups 12, for prism arranges suitable drift angle
, can make adjacent between the image of display pixel groups 12 be just connected, namely expand part and just cover space between display pixel groups 12, thus eliminating the need the grain effect (comprising palisade effect) between display pixel groups 12.
Specific works principle is shown in Figure 10, the light that display pixel groups 12 sends enters from the incident side of light guide plate 0121, then prism is entered into from light emission side, twice deviation is produced in two faces of prism, bright dipping side out after, produce the effect of the refraction to surrounding, light enters beholder's sight line after scattering device 02 scattering, the image of the display pixel groups 12 in beholder's vision obtains expansion, fills up whole display pixel groups 12 space.
Such as, display pixel groups 12(2 × 2 pel array for the specification generally used at present is 2.22mm × 2.22mmOLED display screen), optical microstructures light guide plate 012 can be set and comprise the identical prism in 10 principal sections, the drift angle of prism principal section
; The then bottom surface length of side s=0.95mm of prism, the side length of side h=0.111mm of incident side, the distance between optical microstructures light guide plate 012 and scattering device 02 can be set to t=1.07mm.
Below in conjunction with embodiment, OLED display screen of the present invention is described in detail.
A kind of OLED display screen, comprises at least one OLED display module 13 and signal drive circuit 14, power supply 15, fixed strip 16 and rear shrouding 17, also comprises the device 11 eliminating display pixel grain effect described above.
In addition, can also comprise mask 18, this mask 18, for the device 11 of fixing elimination display pixel grain effect, comprises simple stilt, is pasted onto the high strength thin slice or splicing tape etc. of screen side.
In concrete enforcement, as shown in figure 11, foremost ground floor (towards beholder) is device 11 and the mask 18 of eliminating display pixel grain effect; The second layer is OLED module, and wherein, OLED display module 13 comprises PM-OLED display or AM-OLED display module; Third layer is fixed strip 16, is fixed on by OLED matrix module on mask 18; 4th layer is driving circuit, and it is made up of PCB and relevant control circuit, and its PCB is fixed on fixed strip 16; Layer 5 is system power supply 15, and it is positioned at above driving circuit, is also fixed on the fixed strip 16 of screen frame; Layer 6 is rear shrouding 17.
As shown in figure 12, the lead-in wire binding district of OLED module, is connected on the wiring board of driving circuit by FPC flexible cord.
It should be noted that, the device 11 of elimination display pixel grain effect of ground floor and the OLED display module 13 of the second layer can combine and produce, now without the need to mask 18.
Technology of the present invention, except improving pixel filling rate, solves outside the palisade effect of dot matrix display technique, granular effect, also eliminates the piece impact of OLED display module 13 splicing.
Above-described embodiment of the present invention, does not form limiting the scope of the present invention.Any amendment done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within claims of the present invention.
Claims (6)
1. eliminate a device for display pixel grain effect, it is characterized in that, comprising: cover the optical frames device before OLED display screen display pixel groups, and be arranged on the scattering device before described optical frames device;
Described optical frames device comprises: cover the optical microstructures light guide plate array before all display pixel groups before described OLED display screen respectively;
The bottom surface of described optical microstructures light guide plate is square, bottom center is corresponding with the center of display pixel, in the light emission side of light guide plate, on the direction that the center of light guide plate and the line of four drift angles extend, be respectively provided to a few row prism, the side of the incident side of prism is connected with light guide plate, and the direction that often row prism extends along the center of light guide plate and the line of corner arranges placement in turn;
The shape of described prism is straight cylinder, often arranges described prism vertical with described line, and the planform of the prism that the prism order on each direction is identical is identical, and the direction extended along the center of light guide plate and the line of corner arranges placement in turn;
Wherein, described optical frames device is used for being reflected to surrounding by the light that described display pixel groups sends respectively.
2. the device of elimination display pixel grain effect according to claim 1, it is characterized in that, described scattering device comprises: frosted glass, containing the diffuser screen of micro-scattering particles, or contains the optical screen of micro optical structure.
3. an OLED display screen, comprises at least one OLED display module and signal drive circuit, power supply, fixed strip and rear shrouding, it is characterized in that, also comprise the device of the elimination display pixel grain effect as described in any one of claims 1 to 3.
4. OLED display screen according to claim 3, is characterized in that, described OLED display module comprises: PM-OLED display module or AM-OLED display module.
5. OLED display screen according to claim 3, is characterized in that, also comprises mask, and described mask is used for the device of fixing described elimination display pixel grain effect.
6. OLED display screen according to claim 5, is characterized in that, described mask comprises: the high strength thin slice or the splicing tape that are pasted onto screen side.
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| CN201210004339.XA CN102542927B (en) | 2012-01-06 | 2012-01-06 | Device for removing display pixel particle effect and OLED (organic light emitting diode) display screen |
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| CN201210004339.XA CN102542927B (en) | 2012-01-06 | 2012-01-06 | Device for removing display pixel particle effect and OLED (organic light emitting diode) display screen |
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| EP3246902A1 (en) * | 2016-05-19 | 2017-11-22 | Young Optics Inc. | Display device |
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| CN103489374A (en) * | 2013-08-13 | 2014-01-01 | 江苏清投视讯科技有限公司 | Multi-screen spliced seamless display screen |
| TWI546568B (en) * | 2014-12-17 | 2016-08-21 | 宏達國際電子股份有限公司 | Head-mounted electronic device and display thereof |
| CN105679193B (en) * | 2016-03-16 | 2019-01-11 | 深圳市艾比森光电股份有限公司 | A kind of method and display structure of raising LED display display effect |
| CN105842906A (en) * | 2016-05-27 | 2016-08-10 | 厦门天马微电子有限公司 | Display panel and head-mounted display device comprising same |
| CN106409153A (en) * | 2016-09-27 | 2017-02-15 | 昆山工研院新型平板显示技术中心有限公司 | A display device and a preparation method therefor |
| CN108335636B (en) * | 2018-03-19 | 2023-12-08 | 蒋翔东 | Optical frameless spliced display device |
| US20200004020A1 (en) * | 2018-06-28 | 2020-01-02 | Apple Inc. | Electronic Device With Multi-Element Display Illumination System |
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