CN100529845C - Two-sided display and method for improving the display of the same - Google Patents
Two-sided display and method for improving the display of the same Download PDFInfo
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- CN100529845C CN100529845C CNB2005101202942A CN200510120294A CN100529845C CN 100529845 C CN100529845 C CN 100529845C CN B2005101202942 A CNB2005101202942 A CN B2005101202942A CN 200510120294 A CN200510120294 A CN 200510120294A CN 100529845 C CN100529845 C CN 100529845C
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Abstract
This invention provides one double side display device, which comprises one frame, one first display panel, one second display panel and one aphototropism module, wherein, the aphototropism module comprises one light conductive board, one light source, one reflection transparent film and one optical intensified film near light conductive board; the reflection transparent film is set between light conductive board and frame to reflect lights from second surface into light conductive board.
Description
Technical field
The invention provides a kind of display with double faces, particularly a kind of display with double faces that can improve the bright dark uneven problem of display panel.
Background technology
LCD is a kind of flat display apparatus of frivolous, power saving, and it produces light by a backlight, and the two-layer polaroid that utilizes the rotation status of liquid crystal molecule and be located at the liquid crystal molecule both sides controls penetrability, with the display color picture.LCD has advantages such as picture is stable, flicker free sense, therefore among numerous electric equipment products, the range of application of LCD is extensive in the extreme, comprises the field of portable products such as mobile phone, personal digital assistant, notebook and digital camera.Along with product is constantly weeded out the old and bring forth the new, the correlation technique of LCD is also constantly pushed ahead, and up-to-date trend promptly is the LCD that double-sided display is installed on various products.
With the mobile phone is example, in the design of the display screen of mobile phone now, there is the mobile phone of many styles to be equipped with front-back two-sided display, be divided into main display panel and time display panel, inferior display panel is by the case surface bright dipping of mobile phone, can show simple literal or signal of video signal, allow the user before not answering mobile phone, just learn the relevent information on basis earlier, and main display panel is usually located within the mobile phone outer casing, is used for showing main and more complicated literal and signal of video signal.
Please refer to Fig. 1 to Fig. 3, Fig. 1 and Fig. 2 are respectively the front and the back appearance synoptic diagram of tradition one two-sided display 10, and Fig. 3 is the diagrammatic cross-section of display with double faces 10 shown in Figure 1.As shown in Figure 1, display with double faces 10 includes a housing 14 and a main display panel 16, and wherein the zone is the viewing area 34 of main display panel 16 shown in the dotted line.Fig. 2 displays bounding box and 14 has a fixed mount 14c, is used for fixing the less inferior display panel 18 of size, and dashed region is the viewing area 36 of time display panel 18.Each assembly relative position of display with double faces 10 can be with reference to figure 3.Housing 14 has a fixing bottom surface 14a, is used for putting main display panel 16 and backlight module 12.Backlight module 12 mainly includes a light source 20, a light guide plate 22, and is arranged at diffusion sheet 30, prismatic lens 28,26 and the diffusion sheet (protect diffuser sheet) 24 on the light guide plate 22 in regular turn.At the fixing another side of bottom surface 14a, then put the blooming piece of inferior display panel 18 and time display panel 18, only show a diffusion sheet 32 as an illustration at Fig. 3.In addition, fixedly bottom surface 14a also includes an opening 14b, the rough size that is equal to time display panel 18 of its size.
The function mode of tradition display with double faces 10 is described as follows: light source 20 produces light and enters after the light guide plate 22, can in light guide plate 22, spread and march in whole the light guide plate 22, part light can be penetrated by light guide plate 22 first exiting surfaces 40, enters main display panel 16 through diffusion sheet 30, prismatic lens 28,26 and diffusion sheet 24; Partly light then can be by second exiting surface, 42 ejaculations of light guide plate 22 for another, when light marches to the fixedly bottom surface 14a of housing 14, can be reflected back toward in the light guide plate 22, and then provide light to main display panel 16, and when the light of second exiting surface, 42 ejaculations marches to opening 14b, just can pass fixedly bottom surface 14a and enter diffusion sheet 32, to provide light to inferior display panel 18.Yet, owing to part light can be injected time display panel 18 from opening 14b, therefore cause main display panel 16 secretly to produce the shadow zone relatively in the brightness in inferior display panel 18 zones, form the situation of the viewing area 34 bright dark inequalities of main display panel 16.
In order to improve the situation of this bright dark inequality, conventional art often focuses on change light guide plate 22 design of patterns, and for example near the light guide plate relative opening 14b 22 designs special leaded light pattern, in the hope of the brightness in homogenising and lifting shadow zone.Yet design light guide plate 22 method of patterning are complicated and time-consuming, are difficult for reaching
OrderThe effect that the people is satisfied.And, in different application, when inferior display panel 18 position change is set the time, the pattern of light guide plate 22 again must the redesign.
In addition, because fixedly bottom surface 14a has a thickness T h, therefore light guide plate 22 must cause can forming an optical defect at opening 14b place greater than thickness T h with the spacing of diffusion sheet 32, and then makes winner's display panel 16 have more serious shadow problem again at the edge of relative opening 14b.
From the above, how to utilize simple effective method and improve display with double faces really because the problem that provides light to cause the bright dark inequality of main display panel to inferior display panel, the still problem that needs to be resolved hurrily for industry.
Summary of the invention
Fundamental purpose of the present invention is to provide a kind of method of improving the bright dark uneven phenomenon of display frame of display with double faces, and provide and have at least one reflective display with double faces that film (transflective film) and an optical characteristics are strengthened film (optical property enhancement film) that penetrates, to solve above-mentioned traditional display with double faces because provide light to cause the problem of the bright dark inequality of main display panel to inferior display panel.
According to the present invention, a kind of display with double faces is provided, it includes one has fixedly housing, one first display panel of bottom surface and is located at fixedly a side, one second display panel of bottom surface and is located at the fixedly opposite side and a backlight module of bottom surface, is located at first display panel and fixedly between the bottom surface.Backlight module includes that a light guide plate, a light source are located near the incidence surface of light guide plate, at least one reflective film that penetrates is located at the side that this light guide plate is adjacent to this second display panel with at least one optical characteristics reinforcement film.Light guide plate has an exiting surface and one second exiting surface, and this incidence surface and this first exiting surface and this second exiting surface intersect respectively, and this first and this second exiting surface be parallel to each other.Reflectively penetrate that film is located at second exiting surface of light guide plate and fixedly between the bottom surface, this reflective film that penetrates can be with the light reflected back light guide plate of part by the ejaculation of second exiting surface, this optical characteristics is strengthened rough this opening that is same as of size of film, and this reflective film that penetrates includes a cut-out, strengthens film with ccontaining this optical characteristics.
According to the present invention, a kind of method of display frame of improvement one two-sided display is also disclosed, wherein this display with double faces includes one and has one fixedly housing, one first display panel of bottom surface are located at that fixedly first side, one second display panel of bottom surface are located at this fixedly second side of bottom surface, and one backlight module be located at fixedly between the bottom surface and first display panel, wherein fixedly the bottom surface has an opening, the rough size that equals second display panel of its size.Backlight module includes a light guide plate and a light source.This method of the present invention is used for improving near the shadow situation of image frame opening of this first display panel, it includes the following step: provide at least one and reflectively penetrate that film is located at light guide plate and fixedly between the bottom surface, be used in the light reflected back light guide plate of part by the light guide plate ejaculation, and provide at least one optical characteristics to strengthen film, be located at a side of contiguous second display panel of light guide plate, this optical characteristics is strengthened film can strengthen indicative of local optical properties, to improve near the optical effect the opening, the wherein reflective film that penetrates is selected from the group that following material is formed: semi-permeable diaphragm, the reflecting type polarizing brightness enhancement film, lens, diffusion sheet and the diaphragm that can adjust penetrance and reflectivity, and optical characteristics reinforcement film is selected from the group that following material is formed: semi-permeable diaphragm, the reflecting type polarizing brightness enhancement film, lens, reflectance coating and diffusion sheet, wherein this optical characteristics is strengthened rough this opening that equals of film dimensions, and at least one this reflective film that penetrates includes a cut-out, strengthens film with ccontaining tool optical characteristics.
Because display with double faces of the present invention is provided with reflective film and one to multiple optical characteristics reinforcement film (as brightness enhancement film) with reinforcement optical characteristics of penetrating of a slice at least in light guide plate and the fixedly bottom surface with an opening, therefore, can add the light reflected back light guide plate that good general's light guide plate second exiting surface penetrates, and improve indicative of local optical properties, effectively improve the shadow problem of main display panel to main display panel so that preferred light to be provided.
Description of drawings
Fig. 1 is the front appearance synoptic diagram of tradition one two-sided display.
Fig. 2 is the back appearance synoptic diagram of display with double faces shown in Figure 1.
Fig. 3 is the diagrammatic cross-section of display with double faces shown in Figure 1.
Fig. 4 is the diagrammatic cross-section of first embodiment of display with double faces of the present invention.
Fig. 5 to Fig. 8 is the reflective part enlarged diagram that penetrates film shown in Figure 4.
Fig. 9 is the diagrammatic cross-section of second embodiment of display with double faces of the present invention.
Figure 10, Figure 11 are the reflective part enlarged diagram that penetrates film shown in Figure 9.
Figure 12 is the diagrammatic cross-section of the 3rd embodiment of display with double faces of the present invention.
Figure 13 is the diagrammatic cross-section of the 4th embodiment of display with double faces of the present invention.
Figure 14 for the present invention with lens as the reflective backlight module design flow diagram that penetrates film.
The primary clustering symbol description
10,50,100 display with double faces, 12,52,102 backlight modules
14, the fixing bottom surface of 54,104 housing 14a, 80,124
14b, 82,126 opening 14c fixed mounts
16,18,58,108 display panels of 56,106 main display panels
20,60,110 light sources, 22,62,111 light guide plate
24,64,78,116 diffusion sheets [J1], 26,28,66,114 prismatic lenses
30,32,68,112,122 diffusion sheets, 34,36 viewing areas
40,62b first exiting surface 42,62c second exiting surface
62a light guide plate incidence surface 70,72,118, the 119 reflective films that penetrate
70c, 70e, 70g second prismatic surface 74,120 optical characteristics are strengthened film
84 detents, 86,71 diffusion particles
The 119a reflection penetrates film cut-out 128 reflector plates
Embodiment
Please refer to Fig. 4, Fig. 4 is the diagrammatic cross-section of first embodiment of display with double faces of the present invention.As shown in the figure, display with double faces 50 of the present invention includes a backlight module 52, a housing 54, one main display panel 56 and a display panel 58, and its size is less than the size of main display panel 56.Housing 54 includes a fixing bottom surface 80, be used for ccontaining fixing main display panel 56 and time display panel 58, and fixedly bottom surface 80 has the rough opening 82 that is same as time display panel 58 of a size, to allow the light of backlight module 52 offer time display panel 58 via opening 82.Backlight module 52 includes a light guide plate 62 by the plastic material making, and it has an incidence surface 62a, one first exiting surface 62b and one second exiting surface 62c, and wherein the first exiting surface 62b and one second exiting surface 62c are in close proximity to incidence surface 62a and be arranged in parallel.Backlight module 52 includes also that a light source 60 is located near the incidence surface 62a, a diffusion sheet 68, at least one prismatic lens 66, a diffusion sheet 64 are located on the first exiting surface 62b in regular turn.In addition, backlight module 52 comprises also that a diffusion sheet 78 is located at time display panel 58 and fixedly between the bottom surface 80.Fixedly the surface that is adjacent to main display panel 56, bottom surface 80 can be silver color or white surface, can will march in the light reflected back light guiding surface 62 of fixing bottom surface 80.In addition, in order to improve the shadow situation of main display panel 56, backlight module 52 of the present invention also includes a reflective film 70 and that penetrates can be strengthened the optical characteristics of indicative of local optical properties and strengthen film 74 (for example brightening piece), is located at the second light face 62c and fixedly between the bottom surface 80.The reflective film 70 that penetrates is close to light guide plate 62 and is provided with, and it is selected from the group that following material is formed: semi-permeable diaphragm, reflecting type polarizing brightness enhancement film (dual brightness enhancement film), lens (lens film), diffusion sheet and the diaphragm that can adjust penetrance and reflectivity.
When penetrating film 70 for lens, its surface that is adjacent to light guide plate 62 1 sides has a plurality of prisms when reflective, please refer to shown in Figure 5ly, and Fig. 5 is the reflective part enlarged diagram of film 70 when being a lens that penetrate.The reflective upper surface that penetrates film 70 has a plurality of prism 70a with lens effect, and the salient angle that each prism 70a is made of one first prismatic surface 70b and corresponding one second prismatic surface 70c, wherein the first prismatic surface 70b is towards light source 60, and the second prismatic surface 70c, 60 light sources dorsad.In the present invention, the reflective function that penetrates film 70 is among the light reflected back light guide plate 62 that part is penetrated by the second exiting surface 62c, so the design of lens is to be principle can increase the reflective reflecting surface that penetrates film 70 surfaces.As shown in Figure 5, the area of the first prismatic surface 70b is greater than the area of the second prismatic surface 70c, and the angle theta 1 of first, second prismatic surface 70b, 70c is the obtuse angle, to increase the reflective reflecting surface that penetrates film 70 surfaces.Therefore, the light that is penetrated by light guide plate 62 is mostly by in the reflected back light guide plate 62 upwards, and then main display panel 56 uniform backlights are provided, as shown in phantom in FIG..
In addition, reflectively penetrate the angle theta 1 that first, second prismatic surface 70b, 70c that film 70 also can be designed to each prism 70a have different sizes, and the size of first, second prismatic surface 70b, 70c is also incomplete same, to satisfy optic special requirement.As shown in Figure 6, the reflective film 70 that penetrates has the first prismatic surface 70d, 70f second prismatic surface 70e, the 70g different with area that area varies in size, and the angle theta 1 of each prism 70a is also incomplete same.Moreover in another embodiment, each prism 70a also can have first, second prismatic surface 70b, the 70c of equal area size, but its angle theta 2 is necessary for the obtuse angle, so that the reflective film 70 that penetrates has preferred reflecting effect, as shown in Figure 7.
Moreover, please refer to Fig. 8, Fig. 8 is the another kind of reflective part enlarged diagram that penetrates film 70.In Fig. 8, the reflective film 70 that penetrates not is to be lens, but a film that has an even surface.As previously mentioned, in order to improve reflectivity with light reflected back light guide plate 62, reflective film 70 inside that penetrate have comprised a plurality of diffusion particles 86, when light is penetrated by the second exiting surface 62c of light guide plate 62 and marches to reflective when penetrating film 70, light can be changed direct of travel via the effect of diffusion particle 86, and then among the bounce back light guide plate 62, shown in dotted portion among the figure.In addition,, also can do a suitable design, for example increase thickness T h,, and improve the reflectivity that light is reflected back toward light guide plate 62 so that reflective penetrating in the film 70 can be provided with more diffusion particles 86 to its thickness T h in order to improve the reflective effect that penetrates film 70.
Optical characteristics strengthen film 74 effect herein be to improve main display panel 56 at opening 82 edges because the fixing shadow problem that thickness caused of bottom surface 80, so it has the function of reinforcement indicative of local optical properties.Therefore, the material of optical characteristics reinforcement film 74 is selected from the group that is made up of following material: semi-permeable diaphragm, reflecting type polarizing brightness enhancement film, lens, reflectance coating and diffusion sheet.Optical characteristics is strengthened film 74 and reflective penetrating provided thereon has a spacing Tg between the film 70, learn via experiment, when spacing Tg more hour, can significantly improve the shadow problem of main display panel 56 more, and spacing Tg is preferably smaller or equal to 5 millimeters at opening 82 edges.Therefore, the fixedly bottom surface 80 of present embodiment has a location groove 84 at opening 82 places, is used for ccontaining optical characteristics to strengthen film 74, so that optical characteristics is strengthened film 74 and the reflective spacing Tg that has minimum between the film 70 that penetrates.
Please refer to Fig. 9, Fig. 9 is the side diagrammatic cross-section of second embodiment of display with double faces of the present invention.For ease of explanation, the assembly of Fig. 9 is continued to use each element numbers of Fig. 4.Double side liquid crystal display 50 shown in Figure 9 has a backlight module 52, one main display panel 56 equally and a display panel 58 is fixed on the housing 54, specifically the backlight module of present embodiment includes the two reflective films 70,72 that penetrate, and each reflective film 70,72 that penetrates can be selected from respectively by semi-permeable diaphragm, reflecting type polarizing brightness enhancement film, lens, reflectance coating, diffusion sheet and the diaphragm that can adjust penetrance and reflectivity, that is the reflective film 70,72 that penetrates can be identical or different diaphragm material.Figure 10 shows ought reflectively penetrate the situation that film 70,72 is respectively a lens and a diffusion sheet.As shown in the figure, the reflective film 70 that penetrates has a plurality of prism 70a on the surface that is adjacent to light guide plate 62, and reflective film 72 inside that penetrate include a plurality of diffusion particles 71.By the reflective design that penetrates film 70,72 of bilayer, can improve the reflection ratio that light is reflected back toward light guide plate 62.Yet, the reflective film 70,72 that penetrates also can be respectively a diffusion sheet and a lens, as shown in figure 11, the reflective film 70 that penetrates is a smooth diffusion sheet, and includes a plurality of diffusion particles 71 and scatter and be arranged at wherein, and the reflective film 72 that penetrates is the lens that a surface has a plurality of prism 72a, therefore, the light that is penetrated by second exiting surface of light guide plate 62 is easier to be reflected back toward in the light guide plate 62, as shown in phantom in FIG. after through the reflective effect that penetrates film 70,72.Yet, the reflective film 70,72 that penetrates is not limited to lens or prismatic lens, also can form group's collocation different materials and order, or set up the more multi-layered reflective film that penetrates according to need, to improve the ratio of light reflected back light guide plate 62 by the above-mentioned reflective material that penetrates film.
Please refer to Figure 12, Figure 12 is the diagrammatic cross-section of the 3rd embodiment of display with double faces of the present invention.Display with double faces 100 shown in Figure 12 includes the main display panel of a backlight module 102, one 106, display panel 108 and and has a fixing housing 104 of bottom surface 124.Backlight module 102 is located at main display panel 106 and fixedly between the bottom surface 124, is provided with a diffusion sheet 116, a prismatic lens 114, a diffusion sheet 112, a light source 110, a light guide plate 111 and a reflective film 118 that penetrates from top to bottom in regular turn.The size of the more main display panel 106 of the size of inferior display panel 108 is little, and fixedly bottom surface 124 includes an opening 126, is used for allowing backlight module 102 provide light to inferior display panel 108.In addition, display with double faces 100 also includes a diffusion sheet 122 and is located between time display panel 108 and the housing 104 and optical characteristics reinforcement film 120 is located between diffusion sheet 122 and the housing 104.In this embodiment, optical characteristics is strengthened the rough size that is same as opening 126 of size of film 120, yet optical characteristics reinforcement film 120 also can be designed to have bigger size according to need, for example is same as the reflective size that penetrates film 118.It should be noted that, because the reflective spacing Tg that penetrates film 118 and optical characteristics reinforcement film 120 can influence near the shadow situation of main display panel 106 opening 126, therefore the thickness T h of the special designs fix of present embodiment bottom surface 124 gets over Bao Yuehao, preferably less than 5 millimeters, so that reflective penetrating between film 118 and the optical characteristics reinforcement film 120 has a minimum spacing Tg, and then effectively improve the shadow situation of main display panel 106.
Please refer to Figure 13, Figure 13 is the diagrammatic cross-section of the 4th embodiment of display with double faces of the present invention, and wherein each assembly of Figure 13 is continued to use the element numbers of Figure 12.The backlight module 102 of present embodiment includes the two reflective films 118,119 that penetrate, yet, the approaching fixedly reflective film 119 that penetrates of bottom surface 124 has a cut-out 119a, its size is rough to be same as the fixedly opening 126 of bottom surface 124, strengthens film 120 and be provided with a undersized in cut-out 119a inside in the optical characteristics of cut-out 119a.Under this design, need not consider the fixedly thickness of bottom surface 124, just can make optical characteristics reinforcement film 120 and reflective penetrating have minimum spacing Tg between the film 118, therefore can effectively improve the shadow situation of main display panel 106.Yet, the size and shape that cut-out 119a and optical characteristics are strengthened film 120 is not limited to person shown in Figure 13, and penetrate film 119 and fixedly between the bottom surface 124 reflective, perhaps fixedly between bottom surface 124 and the diffusion sheet 122, one to multiple layer optical characteristics also can be set according to need and in addition strengthen film or the reflective film that penetrates.
Moreover, display with double faces 100 other alternatives include a white or silver color reflector plate 128 is located at fixedly bottom surface 124, so that most of light reflected back master display frame plate 106 is improved its brightness, and reflector plate 128 also has a cut-out corresponding to the fixing opening 126 of bottom surface 124, provides light source to inferior display panel 108 to allow light pass.In addition, in order to improve the display frame of main display panel 106, also can be at the thickness of thickening diffusion sheet 112 so that light can be within diffusion sheet 112 fully scattering, and make the light of main display panel 106 better evenly.
In sum, the invention provides a kind of method of display frame of improvement one two-sided display, its step comprises that providing at least one reflectively penetrates that film is located at light guide plate and fixedly between the bottom surface, be used in part this light guide plate of light reflected back by the light guide plate ejaculation, and provide at least one optical characteristics to strengthen film, be located at the side that light guide plate is adjacent to time display panel, can strengthen indicative of local optical properties so that optical characteristics is strengthened film, and then improve near the optical effect of main display panel opening.The reflective film that penetrates is selected from by semi-permeable diaphragm, reflecting type polarizing brightness enhancement film, lens, diffusion sheet and can adjusts the group that the diaphragm of penetrance and reflectivity is formed, and optical characteristics is strengthened film and is selected from the group that is made up of semi-permeable diaphragm, reflecting type polarizing brightness enhancement film, lens, reflectance coating and diffusion sheet.
It should be noted that in the design of display with double faces backlight module,, must be noted that the design of its prism and determine backlight module need comprise several reflective films that penetrate altogether when the reflective film that penetrates when being a lens.Please refer to Figure 14, Figure 14 for the present invention with lens as the reflective backlight module design flow diagram that penetrates film, its step is described as follows:
Steps A: select for use lens as the reflective film that penetrates.As previously mentioned, lens has a plurality of prisms, the salient angle that each prism is made of one first prismatic surface and corresponding one second prismatic surface, and wherein first prismatic surface is towards light source, and second prismatic surface this light source dorsad;
Step B: measure the first prismatic surface area of each prism and the size of the second prismatic surface area, then can distinguish three kinds of situations of generation step C, step D and step e;
Step C: when each first prismatic surface area greater than the corresponding second prismatic surface area, then carry out step C1;
Step C1: do not need below lens, to provide in addition a reflective film (step C1) that penetrates, directly carry out step F;
Step D: when each first prismatic surface area equals the second prismatic surface area size of correspondence, measure the angle of first, second prismatic surface, carry out step D1 or D2;
Step D1: when the angle of first, second prismatic surface is the obtuse angle, then carry out step D2;
Step D2: alternative according to need in lens and at least one reflective film that penetrates fixedly is set between the bottom surface in addition, and this reflective film that penetrates is preferably a semi-permeable diaphragm, then carries out step F;
Step D3: when the angle of first, second prismatic surface is right angle or acute angle, then carry out step D4;
Step D4: in lens and at least one reflective film that penetrates fixedly is set between the bottom surface in addition, and this reflective film that penetrates is preferably a semi-permeable diaphragm, then carries out step F;
Step e:, carry out step e 1 when each first prismatic surface area during less than the corresponding second prismatic surface area;
Step e 1: in lens and at least one reflective film that penetrates fixedly is set between the bottom surface in addition, and this reflective film that penetrates is preferably a semi-permeable diaphragm, then carries out step F;
Step F: finish the reflective design that penetrates film.
Compared to conventional art, because the present invention is provided with at least one reflective film and at least one optical characteristics reinforcement film of penetrating in addition between the light guide plate of display with double faces and time display panel, wherein reflectively penetrate quantity that film and optical characteristics strengthen film and all can change according to need with putting in order, therefore can adjust effectively by light guide plate and penetrate to the light luminance of time display panel, improve the light of reflected back light guide plate, with blast master display panel picture, and improve near the shadow situation of the main display panel housing opening.In addition, the structural design of display with double faces of the present invention can make reflective penetrating between film and the optical characteristics reinforcement film have a less spacing, so that optical characteristics is strengthened near the light luminance of film energy efficient hardening opening, minimizing causes the shadow situation of main display panel display frame because of opening and housing thickness.Therefore, utilize spirit of the present invention, can simple structure improve the bright dark uneven problem of display frame of traditional main display panel, and can avoid tradition to revise the light guide plate pattern and expend the situation of design cost.
The above only is the preferred embodiments of the present invention, and is all according to equalization variation and modification that the present invention did, all should belong to covering scope of the present invention.
Claims (23)
1. display with double faces, it includes:
One housing, it includes a fixing bottom surface, and this fixedly has an opening in the bottom surface;
One first display panel is located at this fixedly one first side of bottom surface;
One second display panel is located at this fixedly one second side of bottom surface, the rough size that equals this opening of its size; And
One backlight module is located at this first display panel and should be fixedly between the bottom surface, and it includes:
One light guide plate, be located at this first display panel and be somebody's turn to do fixedly between the bottom surface, this light guide plate has an incidence surface, one first exiting surface and one second exiting surface, and wherein this incidence surface and this first exiting surface and this second exiting surface intersect respectively, and this first and this second exiting surface be parallel to each other;
One light source is located at this incidence surface of this light guide plate;
At least one reflective film that penetrates is located at this second exiting surface and should be fixedly between the bottom surface, and this reflective film that penetrates can be with part this light guide plate of light reflected back by this second exiting surface ejaculation; And
At least one optical characteristics is strengthened film, be located at the side that this light guide plate is adjacent to this second display panel, it is characterized in that: the size of this optical characteristics reinforcement film is rough to be same as this opening, and this reflective film that penetrates includes a cut-out, strengthens film with ccontaining this optical characteristics.
2. display with double faces according to claim 1, it is characterized in that wherein this reflective film that penetrates is selected from the group that following material is formed: semi-permeable diaphragm, reflecting type polarizing brightness enhancement film, lens, reflectance coating, diffusion sheet and the diaphragm that can adjust penetrance and reflectivity.
3. display with double faces according to claim 2, it is characterized in that, wherein penetrate film when this lens when this is reflective, the surface that this lens is adjacent to this light guide plate has a plurality of prisms with lens effect, and each this prism all has the salient angle that is made of one first prismatic surface and corresponding one second prismatic surface, this first prismatic surface is towards this light source, and this second prismatic surface this light source dorsad.
4. display with double faces according to claim 3 is characterized in that, wherein respectively this first prismatic surface area greater than corresponding this second prismatic surface area.
5. display with double faces according to claim 3 is characterized in that, wherein respectively this first prismatic surface area is less than this second prismatic surface area of correspondence, and this backlight module also includes a semi-permeable diaphragm and is located at this lens and should be fixedly between the bottom surface.
6. display with double faces according to claim 3 is characterized in that, wherein respectively this first prismatic surface area equals the size of corresponding this second prismatic surface area, and the angle of described first, second prismatic surface is the obtuse angle.
7. display with double faces according to claim 3, it is characterized in that, wherein respectively this first prismatic surface area equals the size of corresponding this second prismatic surface area, and the angle of described first, second prismatic surface is acute angle or right angle, and a semi-permeable diaphragm is located at this lens and this is fixedly between the bottom surface and this backlight module also includes.
8. display with double faces according to claim 3 is characterized in that, wherein said first prismatic surface not exclusively equates with the angle of corresponding described second prismatic surface.
9. display with double faces according to claim 1 is characterized in that, wherein this reflective film that penetrates includes a plurality of diffusion particles, is casually arranged with in this reflective penetrating in the film.
10. display with double faces according to claim 1 is characterized in that, wherein should be fixedly the thickness of bottom surface smaller or equal to 5 millimeters, and this optical characteristics reinforcement film is located at this fixedly between bottom surface and this second display panel.
11. display with double faces according to claim 1 is characterized in that, wherein this reflective penetrating between film and this optical characteristics reinforcement film has a spacing, and the thickness of this spacing is smaller or equal to 5 millimeters.
12. display with double faces according to claim 1 is characterized in that, wherein this backlight module comprises that also one to multiple diffusion sheet, at least one prismatic lens be located between this light guide plate and this first display panel in regular turn.
13. a method of improving the display frame of a two-sided display, wherein this display with double faces includes:
One housing, it includes a fixing bottom surface, and this fixedly has an opening in the bottom surface;
One first display panel is located at this fixedly one first side of bottom surface;
One second display panel is located at this fixedly one second side of bottom surface, the rough size that equals this opening of its size; And
One backlight module is located at this fixedly between bottom surface and this first display panel, and this backlight module includes a light guide plate and a light source; This method is used for improving near the shadow situation of image frame this opening of this first display panel, and it includes the following step:
Provide at least one reflective film that penetrates to be located at this light guide plate and should be fixedly between the bottom surface, be used in part this light guide plate of light reflected back by this light guide plate ejaculation; And
Provide at least one optical characteristics to strengthen film, be located at the side that this light guide plate is adjacent to this second display panel, this optical characteristics is strengthened film can strengthen indicative of local optical properties, to improve near the optical effect this opening;
Wherein this reflective film that penetrates is selected from the group that following material is formed: semi-permeable diaphragm, reflecting type polarizing brightness enhancement film, lens, diffusion sheet and the diaphragm that can adjust penetrance and reflectivity, and this optical characteristics reinforcement film is selected from the group that following material is formed: semi-permeable diaphragm, reflecting type polarizing brightness enhancement film, lens, reflectance coating and diffusion sheet, wherein this optical characteristics is strengthened rough this opening that equals of film dimensions, and at least one this reflective film that penetrates includes a cut-out, strengthens film with ccontaining tool optical characteristics.
14. method according to claim 13 is characterized in that, wherein this optical characteristics is strengthened film and is arranged at this fixedly between bottom surface and this second display panel.
15. method according to claim 13, it is characterized in that, when wherein the material that penetrates film when this is reflective is a lens, the surface that this lens is adjacent to this light guide plate has a plurality of prisms with lens effect, and each this prism all has the salient angle that is made of one first prismatic surface and corresponding one second prismatic surface, this first prismatic surface is towards this light source, and this second prismatic surface this light source dorsad.
16. method according to claim 15 is characterized in that, wherein the size according to described first prismatic surface, this second prismatic surface area provides this reflective method that penetrates film of right quantity to include the following step:
Measure the size of described first prismatic surface area and the corresponding described second prismatic surface area;
If respectively this first prismatic surface area does not then need to provide in addition a reflective film that penetrates greater than corresponding this second prismatic surface area;
If respectively this first prismatic surface area is less than this second prismatic surface area of correspondence, then at least one reflective film that penetrates fixedly was set in addition between the bottom surface in this lens and this;
If respectively this first prismatic surface area equals the size of this second prismatic surface area of correspondence, the angle that then designs described first, second prismatic surface is the obtuse angle; And
If respectively this first prismatic surface area equals the size of corresponding this second prismatic surface area, and the angle of described first, second prismatic surface is acute angle or right angle, then in this lens and this at least one reflective film that penetrates is set in addition between the bottom surface fixedly.
17. method according to claim 16 is characterized in that, wherein this method also includes design and makes respectively that this first prismatic surface not exclusively equates with the angle of corresponding this second prismatic surface.
18. method according to claim 13 is characterized in that, wherein this reflective film that penetrates includes a plurality of diffusion particles, is casually arranged with in this reflective penetrating in the film.
19. method according to claim 13 is characterized in that, wherein this method includes and dwindles this reflective spacing that penetrates between film and this optical characteristics reinforcement film.
20. method according to claim 19 is characterized in that, wherein this reflective film and this optical characteristics of penetrating is strengthened spacing between film smaller or equal to 5 millimeters.
21. method according to claim 20, it is characterized in that, wherein strengthen film and be arranged at this fixedly between bottom surface and this second display panel time when this optical characteristics, this method also includes dwindles this fixedly thickness of bottom surface so that the image of this first display panel can not be subjected to this fixedly the bottom surface thickness effect and shadow appears.
22. method according to claim 21 is characterized in that, wherein should be fixedly the thickness of bottom surface smaller or equal to 5 millimeters.
23. method according to claim 13, it is characterized in that, wherein this method also includes and provides a diffusion sheet to be located at this light guide plate to be adjacent to this first display panel, one side and to be in close proximity to this light guide plate, and improves the optical characteristics that this light guide plate offers the light of this first display panel by the thickness that improves this diffusion sheet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005101202942A CN100529845C (en) | 2005-11-09 | 2005-11-09 | Two-sided display and method for improving the display of the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005101202942A CN100529845C (en) | 2005-11-09 | 2005-11-09 | Two-sided display and method for improving the display of the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1963596A CN1963596A (en) | 2007-05-16 |
| CN100529845C true CN100529845C (en) | 2009-08-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2005101202942A Expired - Fee Related CN100529845C (en) | 2005-11-09 | 2005-11-09 | Two-sided display and method for improving the display of the same |
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| Country | Link |
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| CN (1) | CN100529845C (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009051125A1 (en) * | 2007-10-19 | 2009-04-23 | Sharp Kabushiki Kaisha | Bifacial light emitting backlight |
| CN105223731A (en) * | 2015-10-20 | 2016-01-06 | 深圳市华星光电技术有限公司 | Double-sided liquid crystal display device and backlight module thereof |
| CN107167943B (en) * | 2017-07-20 | 2020-08-14 | 京东方科技集团股份有限公司 | Display panel and display device |
| CN111090191B (en) * | 2018-10-24 | 2022-10-04 | 中强光电股份有限公司 | Light source module and double-screen display device |
| CN110032005A (en) * | 2019-05-20 | 2019-07-19 | 惠州市慧联智显工业系统有限公司 | A kind of display with double faces |
-
2005
- 2005-11-09 CN CNB2005101202942A patent/CN100529845C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1963596A (en) | 2007-05-16 |
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