CN100507681C - Liquid crystal display panel - Google Patents
Liquid crystal display panel Download PDFInfo
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- CN100507681C CN100507681C CNB2007101039117A CN200710103911A CN100507681C CN 100507681 C CN100507681 C CN 100507681C CN B2007101039117 A CNB2007101039117 A CN B2007101039117A CN 200710103911 A CN200710103911 A CN 200710103911A CN 100507681 C CN100507681 C CN 100507681C
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Abstract
An optical compensation film on face plate of liquid crystal display consists of optical film and delay film. It is featured as using optical film to provide plate phase delay on thickness direction, setting delay film with the first and the second delay blocks on optical film, setting two said blocks on optical film for separately providing the first and the second planar phase delay, and setting the first planar phase delay to be different from the second planar phase delay.
Description
Technical field
The present invention relates to a kind of optical compensation films, particularly a kind of optical compensation films that the different optical compensation effect can be provided the zones of different of display panels.The invention still further relates to the manufacture method of this optical compensation films and use the display panels of this optical compensation films.
Background technology
Because LCD is not self luminous display, therefore need one to add light source and come to provide enough brightness to display panels.According to the difference of light source, display panels can be divided into three kinds of penetrating LCD, semi-penetrated semi-reflected liquid crystal display and reflective liquid-crystal displays.Wherein, can use the semi-penetrated semi-reflected liquid crystal display of backlight and external light source simultaneously, (Personal Digital Assistant, PDA) and on the e-book portable products such as (e-Book), therefore being subjected to each side gradually advises order to be fit to be applied to mobile phone, personal digital assistant.
In known semi-penetrated semi-reflected liquid crystal display, can dispose Polarizer on (upper polarizer plate) on the outside surface of display panels usually and reach Polarizer (lower polarizerplate), to reach the effect of demonstration.In addition, in order to improve the display effect of semi-penetrated semi-reflected liquid crystal display, can be between upper and lower Polarizer and display panels the configuring multi-layer blooming piece, for example negative C plate or λ/diaphragms such as 4 phase retardation plates are to compensate.Yet the attaching of multi-layer optical membrane makes the thickness of display panels significantly increase.
Because the penetrating region of semi-penetrating and semi-reflective liquid crystal display panel need use the blooming piece of different compensation effects just can make the display quality optimization with the echo area, if penetrating region all adopts the blooming piece of identical compensation effect to compensate with the echo area, can't make the display quality of penetrating region and echo area all bring up to optimum simultaneously.In other words, the display quality of penetrating region and echo area can meet each other half way.For instance, in order to improve the display brightness of echo area, can between last Polarizer and display panels, dispose λ/4 phase retardation plates.Penetrating region at this moment, can dispose another λ/4 phase retardation plates again between following Polarizer and the display panels, so that can normally show.Thus, not only the thickness of display panels can't reduce, and the design of multiple film layer also makes the demonstration contrast of penetrating region significantly reduce.Therefore, how taking into account the demonstration contrast of penetrating region and the display brightness of echo area, will be an emphasis of semi-penetrated semi-reflected liquid crystal display development.
Summary of the invention
Because the problem that exists in the known technology in order to take into account the demand of different viewing areas, the invention provides a kind of optical compensation films, can provide different optical compensation effect in zones of different.
The present invention also provides a kind of display panels, optical compensation films is integrated in the middle of the display panels, and optical compensation films wherein can compensate the display brightness of echo area in the display panels and the demonstration contrast of penetrating region simultaneously.
The present invention provides a kind of manufacture method of optical compensation films again, and this manufacture method can form a plurality of zones with different optical compensation effect in same optical compensation films.
The present invention proposes a kind of optical compensation films, comprises blooming and phase shift films.Blooming provides the plate phase delay of thickness direction, and (Plate retardation, Rth), and phase shift films is disposed on the blooming.Phase shift films comprises that first postpones the block and the second delay block, first postpones block is disposed on the subregion of blooming, and provide first plane phase delay (the Planar retardation, Rol), and the second delay block is disposed on the subregion of blooming, be positioned at first and postpone beyond the block, and the second plane phase delay (Ro2) is provided, wherein the first plane phase delay is different with the second plane phase delay.
The present invention also provides a kind of display panels, comprises first substrate, second substrate, both alignment layers and liquid crystal layer.First substrate comprises the transflective pixel structure of a plurality of arrayed, and each transflective pixel structure has penetrating region and echo area.Second substrate is positioned at the transflective pixel structure top of first substrate, and second substrate has an optical compensation films.Wherein, optical compensation films comprises blooming and phase shift films.Blooming provides the plate phase delay of thickness direction, and phase shift films is between the blooming and second substrate.Phase shift films comprises that first postpones the block and the second delay block, first postpones block is positioned on the echo area of each transflective pixel structure, and provide the first plane phase delay, and the second delay block is positioned on the penetrating region of each transflective pixel structure, and the second plane phase delay is provided, wherein the first plane phase delay is different with the second plane phase delay.In addition, both alignment layers is positioned at this phase shift films top, and is used for adjusting the arrangement of the liquid crystal molecule of this phase shift films.Liquid crystal layer is disposed between the optical compensation films of the transflective pixel structure of first substrate and second substrate.
In one embodiment of this invention, above-mentioned plate phase delay is about 130nm ± 6nm to 220nm ± 6nm.
In one embodiment of this invention, the first above-mentioned plane phase delay is about 120nm ± 3nm to 160nm ± 3nm.
In one embodiment of this invention, the second above-mentioned plane phase delay is about 0nm to 10nm.
In one embodiment of this invention, above-mentioned blooming is one first negative C plate.
In one embodiment of this invention, the material of above-mentioned blooming comprises liquid crystal material.
In one embodiment of this invention, the material of above-mentioned phase shift films comprises liquid crystal material.
In addition, above-mentioned phase shift films also comprises an orientation definition layer, and the orientation definition layer is positioned at the top, subregion at least of blooming.Phase shift films is adjusted liquid crystal material between orientation definition layer and blooming by the orientation definition layer, so that the second plane phase delay to be provided, postpones block thereby constitute second.The thickness of orientation definition layer is about 0.05 μ m to 0.3 μ m.
In one embodiment of this invention, above-mentioned optical compensation films also comprises a protective seam, and protective seam is disposed between phase shift films and the blooming.
In one embodiment of this invention, above-mentioned optical compensation films also comprises a λ/2 phase retardation films, and wherein phase shift films is for example between λ/2 phase retardation films and blooming.
In one embodiment of this invention, above-mentioned display panels also comprises a color filter film, and color filter film is disposed between the optical compensation films and second substrate.
In one embodiment of this invention, above-mentioned display panels also comprises first both alignment layers, and first both alignment layers is disposed between color filter film and the optical compensation films.
In one embodiment of this invention, above-mentioned display panels comprises that also being disposed at one on second substrate shares electrode, and shared electrode is between liquid crystal layer and optical compensation films.
In one embodiment of this invention, above-mentioned display panels also comprises a plurality of adjustment layers, adjusts layer and is disposed between liquid crystal layer and the optical compensation films, and be arranged in the echo area.Above-mentioned shared electrode covers adjusts layer.
In one embodiment of this invention, above-mentioned display panels also comprises a plurality of adjustment layers, adjust layer and be disposed between the liquid crystal layer and first substrate, and each adjustment layer is arranged in the echo area.
In one embodiment of this invention, above-mentioned display panels also comprises second both alignment layers, and second both alignment layers is disposed between shared electrode and the liquid crystal layer.
In one embodiment of this invention, above-mentioned display panels also comprises the second negative C plate.The second negative C plate is disposed on first substrate, and the second negative C plate is between first substrate and dot structure.
The present invention proposes a kind of manufacture method of optical compensation films again.At first provide a base material, then coating material layer all sidedly on base material.Subsequently, solidify this material layer to form a phase shift films.Phase shift films comprises that a plurality of first postpones block and a plurality of second delay block, wherein, first postpones block provides one first plane phase delay, and second postpones block provides one second plane phase delay, and the first plane phase delay is different with the second plane phase delay.
In one embodiment of this invention, the manufacture method of above-mentioned optical compensation films also is included in and forms a plurality of orientation definition layers on the subregion of base material, wherein, do not cover part material layer on the orientation definition layer and constitute first and postpone block, and orientation definition layer and cover part material layer on the orientation definition layer and constitute second and postpone block.
In one embodiment of this invention, in the manufacture method of above-mentioned optical compensation films, the method that forms the orientation definition layer comprises coating of liquid crystalline material on base material earlier, then under first temperature, carry out the photocuring manufacture process by semi-transparent light shield, be positioned at the liquid crystal material of first area with curing, remove uncured part liquid crystal material then.
In one embodiment of this invention, the method for above-mentioned coating of liquid crystalline material comprises the coating of slit die formula (Slot-die Coating) or method of spin coating (spin coating).
In one embodiment of this invention, the first above-mentioned temperature is about 50 ℃ to 150 ℃.
In one embodiment of this invention, the thickness of the above-mentioned formed described orientation definition layer in liquid crystal material curing back is about 0.05 μ m to 0.3 μ m.
In one embodiment of this invention, the material of above-mentioned material layer comprises liquid crystal material.
In one embodiment of this invention, the method for above-mentioned curing material layer is included under second temperature, carries out another photocuring manufacture process.At this moment, second temperature for example is about 20 ℃ to 90 ℃.
In one embodiment of this invention, the method for above-mentioned formation blooming is included in and forms a negative C plate on the phase shift films.
In one embodiment of this invention, the manufacture method of above-mentioned optical compensation films also is included between phase shift films and the blooming and forms protective seam.
In one embodiment of this invention, before above-mentioned formation orientation definition layer step, also be included in and form a both alignment layers on the base material.
In one embodiment of this invention, the manufacture method of above-mentioned optical compensation films also is included in and forms blooming on the phase shift films.
The present invention also proposes a kind of display panels.This liquid crystal panel comprises first substrate, second substrate and liquid crystal layer.First substrate comprises the transflective pixel structure of a plurality of arrayed, and each transflective pixel structure has a penetrating region and an echo area.Second substrate is positioned at the transflective pixel structure top of first substrate, and second substrate comprises a phase shift films, and phase shift films comprises that a plurality of first postpones block and a plurality of second delay block.First postpones block is positioned on the echo area of each transflective pixel structure, and one first plane phase delay is provided, and the second delay block is positioned on the penetrating region of each transflective pixel structure, and one second plane phase delay is provided.Wherein the material of phase shift films comprises liquid crystal material.First liquid crystal molecule that postpones in the block and the second delay block has different arrangement modes, thereby makes the plane phase delay of winning different with the second plane phase delay.In addition, liquid crystal layer is disposed between the optical compensation films of the transflective pixel structure of first substrate and second substrate.
In the optical compensation films of the present invention, phase shift films provides different plane phase delay in zones of different, make that the phase delay on penetrating region plane approximates zero in the display panels, and the plane phase delay of echo area approximates λ/4.Therefore, phase shift films can increase the display brightness of echo area, and does not influence the demonstration contrast of penetrating region in the display panels.Simultaneously, in the optical compensation films of the present invention, blooming can provide plate phase delay, also helps to improve the demonstration contrast of penetrating region.In addition, the manufacture method of optical compensation films of the present invention can be integrated in the middle of the manufacture process of display panels, thus the problem that can avoid the attaching because of optical compensation films that the thickness of display panels is significantly increased.
For above and other objects of the present invention, feature and advantage can be become apparent, preferred embodiment cited below particularly, and conjunction with figs. is described in detail below.
Description of drawings
Fig. 1 a is the display panels of one embodiment of the invention.
Fig. 1 b is the figure such as correlation curve such as grade of the penetrating region T of display panels 100.
Fig. 2 a is the display panels of another embodiment of the present invention.
Fig. 2 b is the figure such as correlation curve such as grade of the penetrating region T of display panels 200.
Fig. 3 a to Fig. 3 d is the manufacture method of optical compensation films 210 of the present invention.
Fig. 4 a to Fig. 4 c is depicted as the manufacture method of the optical compensation films of another embodiment of the present invention.
Wherein, description of reference numerals is as follows:
100,200: 110: the first substrates of display panels
112: 130: the second substrates of transflective pixel structure
132: color filter film 134: shared electrode
138: the second both alignment layers of 136: the first both alignment layers
140,210: optical compensation films 142: blooming
144,212: phase shift films postpones block at 146: the first
148,218: the second delay blocks 150: liquid crystal layer
172: following Polarizer 174: go up Polarizer
180: adjust layer 214: the orientation definition layer
216: the liquid crystal material 220 between blooming and orientation definition layer: protective seam
230: λ/240: the second negative C plates of 2 phase retardation plates
300,400: base material 302,402: both alignment layers
310,404,404a, 404b: material layer I, II: zone
R: echo area T: penetrating region
Embodiment
Fig. 1 a is the display panels of one embodiment of the invention.Please refer to Fig. 1 a, the display panels 100 of present embodiment comprises first substrate 110, second substrate 130 and liquid crystal layer 150.First substrate 110 comprises the transflective pixel structure 112 (only drawing in Fig. 1 a) of a plurality of arrayed.Each transflective pixel structure 112 has penetrating region T and echo area R.Simultaneously, second substrate 130 is positioned at transflective pixel structure 112 tops of first substrate 110, and second substrate 130 has optical compensation films 140.Optical compensation films 140 comprises blooming 142 and phase shift films 144.In addition, liquid crystal layer 150 is disposed between the optical compensation films 140 of the transflective pixel structure 112 of first substrate 110 and second substrate 130.
In the optical compensation films 140 of present embodiment, the phase shift films 144 between the blooming 142 and second substrate 130 comprises that first postpones the block 146 and the second delay block 148.Phase shift films 144 can be an integrated single layer structure.First postpones block 146 is positioned on the echo area R of each transflective pixel structure 112, and provide the first plane phase delay, and the second delay block 148 is positioned on the penetrating region T of each transflective pixel structure 112, and the second plane phase delay is provided, wherein the first plane phase delay is different with the second plane phase delay.Simultaneously, blooming 142 provides the plate phase delay of thickness direction.
For example, the plate phase delay of blooming 142 is about 130nm ± 6nm to 220nm ± 6nm, and the first plane phase delay that the first delay block 146 is provided is about 120nm ± 3nm to 160nm ± 3nm, preferably is about 120nm ± 3nm to 140nm ± 3nm.In addition, the second second plane phase delay that postpones block 148 and provided is about 0nm to 10nm.
The outside of display panels 100 can attach down Polarizer 172 respectively and go up Polarizer 174.When display panels 100 showed, (about 120nm ± 3nm to 160nm ± 3nm) can make the linearly polarized photon by last Polarizer 174 change into circularly polarized light and enter liquid crystal layer 150 the first plane phase delay that the phase shift films 144 of optical compensation films 140 is provided in the R of echo area.Than linearly polarized photon, the component of circularly polarized light on each polarised direction is roughly the same.In the R of echo area, light, can be utilized by liquid crystal layer 150 and when being reflected more effectively with circularly polarized state.Simultaneously, the circularly polarized light of returning of being reflected can be transformed into linearly polarized photon during once again through phase shift films 144, carries out picture to pass upper deflection board 174 and shows.In other words, the compensating action that optical compensation films 140 is provided helps to improve the display brightness of echo area R.
In addition, the first plane phase delay that provided in penetrating region T of the phase shift films 144 of optical compensation films 140 is about zero.Pass through to keep original linear polarization characteristic behind Polarizer 172, liquid crystal layer 150 and the optical compensation films 140 down by the light that backlight provided.Therefore, do not need configuration second layer phase shift films on first substrate 110 in addition in the display panels 100, the display effect of penetrating region T can not be affected because of the multiple film layer design yet.
In addition, in the display panels 100, the liquid crystal molecule of liquid crystal layer 150 has intrinsic optical anisotropy (optical anisotropy), may influence the display effect of display panels 100.Therefore, for example dispose the first negative C plate in the optical compensation films 140, with phenomenons such as the delay that optical anisotropy was caused that compensates various liquid crystal molecules or light leaks as blooming 142.Learn from actual measured results, knownly be about 4300 as the image contrast value that display panels was presented of optical compensation in the mode that attaches various optical films.Under the same test condition, the penetrating region T of display panels 100 of the present invention waits correlation curve figure shown in Fig. 1 b.By Fig. 1 b as can be known, the correlative value of the penetrating region T of display panels 100 is about 4434, and is more high than known design.Generally speaking, in the display panels 100 of present embodiment, penetrating region T has good demonstration contrast, and echo area R has higher display brightness.
Specifically, the blooming 142 in the optical compensation films 140 and phase shift films 144 for example are respectively to become branch to constitute uniformly by (intrinsic) in essence, and the material of blooming 142 and phase shift films 144 comprises liquid crystal material.The optical property of liquid crystal material can be adjusted by the thickness of change liquid crystal material or the arrangement of liquid crystal molecule.Therefore, in the optical compensation films 140, the liquid crystal molecule that first of phase shift films 144 is postponed in the block 146 and the second delay block 148 has different arrangement modes, can provide different compensation effects and need not change other material parameter condition (for example material composition, each constituent concentration, whether alloy or the like is arranged), make first of phase shift films 144 postpone block 146 and second and postpone block 148 and have different plane phase delay.For example, the present invention can use various contact allocating process or contactless allocating process to adjust the arrangement mode of the liquid crystal molecule of zones of different, to make phase shift films 144.
Particularly, display panels 100 can further comprise the shared electrode 134 that is disposed on second substrate 130, and wherein shared electrode 134 is between liquid crystal layer 150 and optical compensation films 140.Simultaneously, display panels 100 also comprises a color filter film 132, is disposed between the optical compensation films 140 and second substrate 130, to carry out full-colorization demonstration.In other embodiments, also can use colored filter in array (color filter on array; COA) design, just color filter film 132 is arranged on first substrate 110.What deserves to be mentioned is that when color filter film 132 was disposed between the optical compensation films 140 and second substrate 130, configurable first both alignment layers 136 between color filter film 132 and the phase shift films 144 was to adjust the orientation of liquid crystal molecule in the phase shift films 144.In addition, can also between shared electrode 134 and liquid crystal layer 150, dispose second both alignment layers 138, arrange so that the liquid crystal molecule of liquid crystal layer 150 has specific orientation.
Fig. 2 a is the display panels of another embodiment of the present invention.Please refer to Fig. 2 a, the design of display panels 200 is by display panels 100.Its different part of comparing with display panels 100 is that the phase shift films 212 of optical compensation films 210 also comprises orientation definition layer 214 in the display panels 200, and orientation definition layer 214 is disposed at the top, subregion of blooming 142.Adjust the orientation of the part liquid crystal material 216 between orientation definition layer 214 and blooming 142 by orientation definition layer 214.Thus, orientation definition layer 214 can provide the second plane phase delay with part liquid crystal material 216.Simultaneously, the thickness of orientation definition layer 214 for example is to be about 0.05 μ m to 0.3 μ m, preferably is about 0.05 μ m to 0.2 μ m.In addition, optical compensation films 210 also comprises a protective seam 220, and protective seam 220 is disposed between phase shift films 212 and the blooming 142.
In optical compensation films 210,,, for example be to be about 0nm to 10nm so that the second delay block 218 provides specific plane phase delay by the orientation of the liquid crystal material 216 of orientation definition layer 214 adjustment between orientation definition layer 214 and blooming 142.In addition, in the present embodiment, the plane phase delay that first postpones block 146 is provided is about 120nm ± 3nm to 160nm ± 3nm, preferably is about 120nm ± 3nm to 140nm ± 3nm.Thus, phase shift films 212 can provide different compensation effects at the penetrating region T of display panels 200 with echo area R.Specifically, phase shift films 212 adds that disposing of blooming 142 helps make the display brightness of echo area R to increase, and improves the demonstration contrast of penetrating region T simultaneously.
In addition, optical compensation films 210 also comprises a λ/2 phase retardation films 230, and wherein phase shift films 212 for example is between λ/2 phase retardation films 230 and blooming 142.At this moment, R shown color in echo area can have better saturation degree, to improve the display quality of display panels 200 more.Certainly, the present invention not and the configuration that is defined in λ/2 phase retardation films 230 improve the color saturation that echo area R is presented.In other embodiments, the process parameters in the time of can forming phase shift films 212 by adjustment is temperature or thickness for example, to improve the color saturation that echo area R is presented in each transflective pixel structure 112.
Further, display panels 200 also can comprise the second negative C plate 240, the second negative C plate 240 is disposed on first substrate 110, and the second negative C plate 240 is between first substrate 110 and dot structure 112, helps to increase the visual angle of the penetrating region T of display panels 200.Fig. 2 b is the figure such as correlation curve such as grade of the penetrating region T of display panels 200.By Fig. 2 b as can be known, the configuration of the second negative C plate 240 makes viewing area T have broad visual angle.
For more abundant content of the present invention, the below manufacture method of the optical compensation films 210 of proposition one embodiment of the invention of disclosing.Fig. 3 a is the manufacture method of the optical compensation films 210 of one embodiment of the invention to Fig. 3 d, and it comprises the step of the following stated.
At first, please refer to Fig. 3 a, a base material 300 is provided, and on the subregion of base material 300, form a plurality of orientation definition layers 214.Base material 300 for example is colored filter, glass substrate etc., and for example is formed with a both alignment layers 302 on the base material 300.Specifically, be coating of liquid crystalline material on base material 300 earlier for example in the method that forms orientation definition layer 214 on the base material 300.The method of coating of liquid crystalline material comprises the coating of slit die formula (Slot-die Coating) or method of spin coating (spin coating).Then, under first temperature, (half-tone mask) carries out the photocuring manufacture process by semi-transparent light shield, is positioned at the liquid crystal material on the subregion of base material 300 with curing.Then, remove uncured part liquid crystal material to form orientation definition layer 214, wherein the thickness of orientation definition layer 214 is about 0.05 μ m to 0.3 μ m, preferably is about 0.05 μ m to 0.2 μ m.
Specifically, when carrying out the photocuring manufacture process, first temperature can be to be about 50 ℃ to 150 ℃, and the material of orientation definition layer 214 can be nematic (nematic) liquid crystal or layered-type (sematic) liquid crystal.For example, if use the material of nematic (nematic) liquid crystal as orientation definition layer 214, then first temperature can be about 90 ℃.At this moment, liquid crystal material can have direction-free arrangement mode at random (isotropic) under first temperature, and does not arrange with the alignment direction of both alignment layers 302.Therefore, after utilizing the photocuring manufacture process that liquid crystal material is solidified under first temperature, can make orientation definition layer 214 have the arrangement of non-directional (isotropic).
Then, please refer to Fig. 3 b, coating material layer 310 all sidedly on base material 300 is with covering substrates 300 and orientation definition layer 214.The material of material layer 310 for example is a liquid crystal material, and the mode of coating material layer 310 for example is slit die formula coating (Slot-die Coating) or a method of spin coating (spincoating).
Subsequently, please material layer 310 be solidified simultaneously with reference to Fig. 3 b and Fig. 3 c, to form the phase shift films 212 shown in Fig. 3 c.At this moment, the method for curing material layer 310 for example is under second temperature different with first temperature, carries out another photocuring manufacture process, and wherein second temperature for example is to be about 20 ℃ to 90 ℃.What deserves to be mentioned is that therefore the photocuring manufacture process material layer 310 on the curing substrate 300 all sidedly can not need use semi-transparent light shield in this step.
Specifically, forming material layer 310 used liquid crystal materials for example is nematic (nematic) liquid crystal, and then second temperature for example is when being about 20 ℃, and the liquid crystal molecule of material layer 310 can present orderly arrangement (anisotropic).Therefore, under second temperature, directly can have the alignment direction identical, thereby after curing, constitute the first delay block 146 with both alignment layers 302 with the part material layer 310 of both alignment layers 302 contacts.Simultaneously, be positioned at liquid crystal material 216 on the orientation definition layer 214 and can have the alignment direction identical, thereby constitute second and postpone blocks 218 with orientation definition layer 214 is common with orientation definition layer 214.Therefore, phase shift films 212 comprises that a plurality of first postpones block 146 and a plurality of second delay block 218 (only respectively illustrating among the figure as an example).What deserves to be mentioned is that first temperature and second temperature can be looked the kind of liquid crystal material and characteristic and be adjusted, so that the liquid crystal material in the zones of different has different arrangement modes and forms phase shift films 212.
Afterwards, please refer to Fig. 3 d, on phase shift films 212, form blooming 142.The method that forms blooming 142 is included in and forms a negative C plate on the phase shift films 212.In addition, form blooming 142 and also be included in formation protective seam 220 on the phase shift films 212 before, isolate between phase shift films 212 and blooming 142, to form.The material of protective seam 220 for example is to use macromolecular material or organic material.At this moment, the mentioned optical compensation films 210 of previous embodiment roughly completes.Certainly, in order to improve the compensation effect of optical compensation films 210 more, can before forming phase shift films 212, on base material 300, form λ/2 phase retardation films (λ shown in Fig. 2 a/2 phase retardation films 230) earlier, make λ/2 phase retardation films between phase shift films 212 and base material 300.
Please continue the d with reference to Fig. 3, in the optical compensation films 210, first postpones block 146 has different orientation arrangements with second liquid crystal material that postpones block 218, can have different optical properties thereby make the first delay block 146 and second postpone block 218.Therefore, phase shift films 212 can provide different optical compensation effect to zones of different if be configured in the display panels.In addition, the utilization coating that present embodiment proposed and the mode of photocuring form the manufacture method of optical compensation films 210, can be integrated in the manufacturing process of display panels.Than the manufacture process that attaches compensate film, manufacture method of the present invention has higher manufacture process qualification rate, and helps to make display panels to develop towards slimming.
In addition, the present invention also can be manufactured on the optical compensation films that zones of different has Different Plane phase delay by alternate manner.For instance, Fig. 4 a to Fig. 4 c is depicted as the manufacture method of the optical compensation films of another embodiment of the present invention.Please refer to Fig. 4 a, a substrate 400 is provided earlier, for example have a both alignment layers 402 on the substrate 400.Coating material layer 404 on substrate 400, curing material layer 404 subsequently.In the present embodiment, the material of material layer 404 for example is a liquid crystal material, and base material 400 for example is materials such as glass baseplate or colored filter.
Specifically, the mode of curing material layer 404 for example is to carry out photocuring manufacture process (shown in Fig. 4 b) by half diffuser earlier under first temperature.Semi-transparent light shield for example can make part light pass through and while shaded portions light.Therefore, light can shine in first area I, and can't shine in second area II through behind the semi-transparent light shield.At this moment, the part material layer 404a that is positioned at first area I can be cured under first temperature, thereby makes the liquid crystal material of part material layer 404a present the first order state.Therefore, the material layer 404a of first area I can provide specific plane phase delay after solidifying.
Then, please refer to Fig. 4 c, under second temperature, carry out the photocuring manufacture process, so that the material layer on the base material 400 404 is solidified comprehensively.Second temperature can make the liquid crystal material of the part material layer 404b of second area II present the second order state.Therefore, the material layer 404b of second area II can provide another specific plane phase delay after solidifying.Thus, just can make first area I and second area II that different plane phase delay is provided by adjusting first temperature with second temperature.Furthermore, has different optical compensation effects in the zones of different.The part material layer 404a that is positioned at first area I for example can constitute first postpone block or second postpone block one of them, the part material layer 404b that is positioned at second area II then constitutes another and postpones block.
In sum, optical compensation films of the present invention and manufacture method thereof, and the display panels of using this optical compensation films has the advantage of the following stated at least:
Optical compensation films of the present invention has different plane phase delay in zones of different, thereby can produce different compensation effects at the display frame of zones of different in the display panels.
Optical compensation films of the present invention can make the echo area of display panels present higher display brightness, can make penetrating region present higher demonstration contrast simultaneously.
Optical compensation films of the present invention can provide good compensation effect to the demonstration of display panels under the design of the less blooming number of plies.
The manufacture method of optical compensation films of the present invention can be integrated in the middle of the manufacture process of display panels, causes the thickness increase of liquid crystal panel and the shortcoming of complicate fabrication process so the present invention can improve because of attaching optical compensation films.
Though the present invention with preferred embodiment openly as above, it is not in order to qualification the present invention, and those skilled in the art can do some and change and modification in not breaking away from design of the present invention and scope.Protection scope of the present invention is as the criterion with defining of appending claims.
Claims (10)
1. display panels comprises:
One first substrate comprise the transflective pixel structure of a plurality of arrayed, and described transflective pixel structure has a penetrating region and an echo area;
One second substrate, be positioned at the described transflective pixel structure top of this first substrate, this second substrate comprises a phase shift films, this phase shift films comprises that a plurality of first postpones block and a plurality of second delay block, described first postpones block is positioned on this echo area of described transflective pixel structure, and provide one first plane phase delay, and the described second delay block is positioned on this penetrating region of described transflective pixel structure, and provide one second plane phase delay, wherein the material of this phase shift films is uniform liquid crystal material in essence, described first liquid crystal molecule that postpones in block and the described second delay block has different arrangement modes, thereby makes this first plane phase delay different with this second plane phase delay;
Both alignment layers, it is positioned at this phase shift films top, and is used for adjusting the arrangement of the liquid crystal molecule of this phase shift films; And
One liquid crystal layer is disposed between this first substrate and this second substrate.
2. display panels as claimed in claim 1, wherein this second substrate also comprises a blooming, and the plate phase delay of a thickness direction is provided, wherein this phase shift films is disposed on this blooming.
3. display panels as claimed in claim 2, wherein this plate phase delay is 130nm ± 6nm to 220nm ± 6nm.
4. display panels as claimed in claim 2, wherein this blooming is one first negative C plate.
5. display panels as claimed in claim 2, wherein the material of this blooming comprises liquid crystal material.
6. display panels as claimed in claim 2, wherein this second substrate also comprises a λ/2 phase retardation films, this phase shift films is between this λ/2 phase retardation films and this blooming.
7. display panels as claimed in claim 1, wherein this second substrate also comprises a color filter film, this phase shift films is disposed on this color filter film.
8. display panels as claimed in claim 1 also comprises one second negative C plate, and the second negative C plate is disposed on this first substrate, and this second negative C plate is between this first substrate and described dot structure.
9. display panels as claimed in claim 1, wherein this first plane phase delay is 120nm ± 3nm to 160nm ± 3nm.
10. display panels as claimed in claim 1, wherein this second plane phase delay is 0nm to 10nm.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007101039117A CN100507681C (en) | 2007-05-15 | 2007-05-15 | Liquid crystal display panel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007101039117A CN100507681C (en) | 2007-05-15 | 2007-05-15 | Liquid crystal display panel |
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| CN101051154A CN101051154A (en) | 2007-10-10 |
| CN100507681C true CN100507681C (en) | 2009-07-01 |
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| CN103364993A (en) | 2013-03-22 | 2013-10-23 | 合肥京东方光电科技有限公司 | Liquid crystal display panel and liquid crystal display device |
| CN107807466A (en) * | 2017-11-03 | 2018-03-16 | 惠科股份有限公司 | Liquid crystal disply device and its preparation method |
| CN113625492A (en) * | 2020-05-06 | 2021-11-09 | 群创光电股份有限公司 | Electronic device |
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