CN114326228A - Glass-based liquid crystal phase adjusting device and preparation method - Google Patents
Glass-based liquid crystal phase adjusting device and preparation method Download PDFInfo
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- CN114326228A CN114326228A CN202210007660.7A CN202210007660A CN114326228A CN 114326228 A CN114326228 A CN 114326228A CN 202210007660 A CN202210007660 A CN 202210007660A CN 114326228 A CN114326228 A CN 114326228A
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Abstract
The invention provides a glass-based liquid crystal phase modulation device and a preparation method thereof, wherein the device comprises an upper substrate, a lower substrate and a liquid crystal layer arranged between the upper substrate and the lower substrate, wherein the upper substrate comprises an upper glass substrate and a common electrode; the lower substrate comprises a lower glass substrate, a first thin film transistor, a second thin film transistor and an organic flat layer, wherein the first thin film transistor, the second thin film transistor and the organic flat layer are arranged from the lower glass substrate to one side of the liquid crystal layer; the side, facing the liquid crystal layer, of the organic flat layer is sequentially provided with a first pixel electrode, a first passivation layer and a second pixel electrode, and the first pixel electrode and the second pixel electrode are arranged in a staggered mode. The technical problems that in the prior art, the aperture opening ratio of a glass-based liquid crystal phase modulation device is difficult to improve, the utilization rate of phase modulation light is reduced, and high-order diffraction generated stray light is generated due to large gaps are solved.
Description
Technical Field
The invention relates to the technical field of liquid crystal display, in particular to a glass-based liquid crystal phase adjusting device and a preparation method thereof.
Background
A glass-based liquid crystal phase modulation device is widely used in electronic devices such as monitors, projectors, cellular phones, and portable information terminals (PDAs) and a Pixel electrode (Pixel electrode) is an important component of a liquid crystal display device, because it mainly achieves a display effect by reflecting external light and can exhibit advantages of thin, light weight, and low power consumption.
However, most of the Pixel electrodes of the conventional glass-based liquid crystal phase modulation device are distributed in an array, a certain gap is reserved between two adjacent Pixel electrodes, the size of the gap is generally more than 2 microns, so that the aperture opening ratio of the Pixel electrodes cannot be higher, the phase modulation light utilization ratio of a liquid crystal display device is affected, and the high-order diffraction generated stray light can be increased due to the large offset of the gap between the Pixel electrodes.
Disclosure of Invention
Based on the above, the invention aims to provide a glass-based liquid crystal phase modulation device and a preparation method thereof, which are used for solving the technical problems that in the prior art, the aperture ratio of a Pixel electrode of the glass-based liquid crystal phase modulation device is difficult to improve, the utilization rate of phase modulation light is reduced, and gaps are too large to form high-order diffraction to generate stray light.
The invention provides a glass-based liquid crystal phase modulation device which comprises an upper substrate, a lower substrate and a liquid crystal layer arranged between the upper substrate and the lower substrate, wherein the upper substrate comprises an upper glass substrate and a common electrode arranged from the upper glass substrate to one side of the liquid crystal layer;
the lower substrate comprises a lower glass substrate, a first thin film transistor and a second thin film transistor, wherein the first thin film transistor and the second thin film transistor are arranged from the lower glass substrate to one side of the liquid crystal layer, are positioned on the same layer, and are covered with an organic flat layer;
a first pixel electrode, a first passivation layer and a second pixel electrode are sequentially arranged on one side of the organic flat layer facing the liquid crystal layer, and the first pixel electrode and the second pixel electrode are arranged in a staggered mode;
the first thin film transistor and the second thin film transistor are used for respectively controlling the voltage on the first pixel electrode and the voltage on the second pixel electrode.
Further, the glass-based liquid crystal phase modulation device, wherein the first pixel electrodes are distributed in a rectangular array, and the second pixel electrodes are arranged opposite to a gap between two adjacent first pixel electrodes.
Further, the lower substrate further includes a first storage capacitor electrically connected to the first pixel electrode, and a second storage capacitor electrically connected to the second pixel electrode.
Further, the glass-based liquid crystal phase modulation device, wherein a first electrical pin extends from one side of the first pixel electrode facing the lower glass substrate, and the first electrical pin passes through the organic flat layer to be connected with the first storage capacitor; and a second electric connecting pin extends from one side of the second pixel electrode facing the lower glass substrate, and the second electric connecting pin sequentially penetrates through the first passivation layer and the organic flat layer to be connected with the second storage capacitor.
Further, the glass-based liquid crystal phase modulation device, wherein the first thin film transistor and the second thin film transistor are of one of amorphous silicon, polycrystalline silicon or metal oxide.
Further, the glass-based liquid crystal phase modulation device is characterized in that a phase compensation film is arranged on one side, back to the liquid crystal layer, of the upper glass substrate.
Further, the glass-based liquid crystal phase modulation device is characterized in that the liquid crystal layer adopts positive liquid crystal.
Further, the glass-based liquid crystal phase modulation device, wherein the voltage of the first pixel electrode is higher than the voltage of the second pixel electrode.
Further, the glass-based liquid crystal phase modulation device is provided with a second passivation layer on one side of the second pixel electrode facing the liquid crystal layer.
The invention also provides a preparation method of the glass-based liquid crystal phase modulation device, which comprises the following steps:
laying a first thin film transistor and a second thin film transistor on the upper surface of a lower glass substrate, and adjusting the first thin film transistor and the second thin film transistor to be in the same horizontal plane;
covering an organic flat layer on the upper surfaces of the first thin film transistor and the second thin film transistor;
sequentially laying a first pixel electrode and a first passivation layer on the upper surface of the organic flat layer, and aligning the first pixel electrode and the first passivation layer;
laying a second pixel electrode on the upper surface of the first passivation layer, and aligning the second pixel electrode with the first passivation layer so as to control the alignment deviation of the manufacturing process between the first pixel electrode and the second pixel electrode within a preset range, thereby forming a lower substrate;
lay public common electrode in order to form the upper substrate on last glass substrate, will the upper substrate with one side coating one deck alignment layer that the infrabasal plate corresponds each other, it is right after rubbing or optical alignment technology is carried out to the alignment layer the infrabasal plate display area's glass edge coating round frame sealing glue seal in the frame sealing glue the last liquid crystal of dropping on the image layer of registering, will under vacuum environment the upper substrate with the infrabasal plate is counterpointed the laminating, under ultraviolet irradiation establishes and heating regulation, seals the frame and glues the solidification, forms glass base liquid crystal phase position modulation device.
According to the glass-based liquid crystal phase modulation device and the preparation method, the double-layer Pixel electrode structure is adopted, and the first Pixel electrode and the second Pixel electrode are arranged in a staggered mode, so that the aperture opening ratio is improved, specifically, the first Pixel electrode and the second Pixel electrode are arranged on two opposite sides of the first passivation layer and arranged in a staggered mode, in the actual production process, the process contraposition deviation between the first Pixel electrode and the second Pixel electrode can be adjusted, the gap between the first Pixel electrode and the second Pixel electrode is reduced, the aperture opening ratio is greatly improved, and the technical problems that in the prior art, the aperture opening ratio of a Pixel electrode of the glass-based liquid crystal phase modulation device is difficult to improve, the phase modulation light utilization rate is reduced, and the gap is large to form high-order diffraction to generate stray light are solved.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a schematic view showing a layered structure of a phase modulation apparatus for a glass-based liquid crystal according to a first embodiment of the present invention;
FIG. 2 is a schematic diagram illustrating an arrangement of first pixel electrodes and second pixel electrodes according to a first embodiment of the present invention;
FIG. 3 is a graph showing the phase delay of the first Pixel electrode and the second Pixel electrode in relation to the Pixel voltage according to the first embodiment of the present invention;
FIG. 4 is a schematic view showing a layered structure of another embodiment of a glass-based liquid crystal phase modulation apparatus according to the first embodiment of the present invention;
FIG. 5 is a flow chart illustrating a method for manufacturing a glass-based liquid crystal phase modulation device according to a second embodiment of the present invention.
The main components in the figure are illustrated by symbols: the liquid crystal display device comprises an upper substrate 10, an upper glass substrate 11, a common electrode 12, a liquid crystal layer 20, a lower glass substrate 31, a first thin film transistor 32, a second thin film transistor 33, an organic flat layer 34, a first pixel electrode 35, a first power connection pin 351, a first passivation layer 36, a second pixel electrode 37, a second passivation layer 40, a first storage capacitor 51, a second storage capacitor 52, a liquid crystal alignment layer 60 and a phase compensation film 70.
Detailed Description
In order to make the objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. Several embodiments of the invention are presented in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. As used herein, the terms "vertical," "horizontal," "left," "right," "up," "down," and the like are used for descriptive purposes only and not for purposes of indicating or implying that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the invention.
In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "fixed," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
It should be noted that the luminance of the liquid crystal display panel is the product of the luminance of the backlight and the pixel transmittance, and on the premise that the luminance of the liquid crystal display panel is constant, the luminance of the backlight can be reduced by increasing the pixel transmittance, so that energy saving and consumption reduction are realized.
The glass-based liquid crystal phase modulation apparatus can be roughly classified into a silicon-based liquid crystal phase modulator, which is generally limited to a small size as compared with a silicon wafer and a process, and a glass-based liquid crystal phase modulation apparatus, which can be made larger in size.
Therefore, the pixel transmittance can be effectively improved by improving the pixel aperture ratio, the liquid crystal transmission efficiency, the polarizer transmittance and the color filter transmittance of the glass-based liquid crystal phase modulation device, wherein the aperture ratio refers to the light transmission ratio, namely the light-transmitting effective area of each pixel is divided by the total area of the pixels, and the phase modulation effect is better when the aperture ratio is higher.
However, most of the Pixel electrodes of the conventional glass-based liquid crystal phase modulation device are distributed in an array manner, a certain gap is left between two adjacent Pixel electrodes, the size of the gap is generally more than 2 micrometers, so that the aperture ratio of the Pixel electrodes cannot be higher, the utilization rate of phase modulation light of a liquid crystal display device is affected, and the high-order diffraction may be increased to generate stray light due to the large gap between the Pixel electrodes.
In order to improve the above problem, embodiments of the present application provide a glass-based liquid crystal phase modulation device.
Referring to fig. 1, a liquid crystal phase modulation device based on glass in a first embodiment of the present invention includes an upper substrate 10, a lower substrate, and a liquid crystal layer 20 disposed between the upper substrate 10 and the lower substrate, wherein the upper substrate 10 includes an upper glass substrate 11 and a Common electrode 12 (Common electrode) disposed from the upper glass substrate 11 toward the liquid crystal layer 20;
the lower substrate comprises a lower glass substrate 31, and a first Thin Film Transistor 32 (Thin Film Transistor) and a second Thin Film Transistor 33 which are arranged from the lower glass substrate 31 to the liquid crystal layer 20 side, wherein the first Thin Film Transistor 32 and the second Thin Film Transistor 33 are positioned in the same layer, and the organic flat layer 34 covers the first Thin Film Transistor 32 and the second Thin Film Transistor 33 to the liquid crystal layer 20 side;
a first pixel electrode 35, a first passivation layer 36 and a second pixel electrode 37 are sequentially arranged on one side of the organic flat layer 34 facing the liquid crystal layer 20, and the first pixel electrode 35 and the second pixel electrode 37 are arranged in a staggered manner;
the first thin film transistor 32 and the second thin film transistor 33 are used for controlling the voltage on the first pixel electrode 35 and the second pixel electrode 37, respectively.
Further, the voltage of the first pixel electrode 35 is higher than the voltage of the second pixel electrode 37. Specifically, the first thin film transistor 32 and the second thin film transistor 33 respectively drive the first pixel electrode 35 and the second pixel electrode 37, so that the voltage of the first pixel electrode 35 is higher than that of the second pixel electrode 37, and the rotation angle of the liquid crystal above the first pixel electrode 35 is larger than that of the liquid crystal above the second pixel electrode 37, so as to compensate the phase delay generated by the light passing through the passivation layer, and achieve the effect of consistent phase delay of the first pixel electrode 35 and the second pixel electrode 37.
The types of the first thin film transistor 32 and the second thin film transistor 33 are not limited, and the conventional TFT types generally include an amorphous silicon TFT, a polysilicon TFT, a metal oxide TFT, and the like.
In this embodiment, the first pixel electrode 35 and the second pixel electrode 37 include a reflective metal, a reflective metal alloy, or any combination thereof, and may be a single layer, such as a metal with high reflectivity, such as silver, or a multilayer structure, such as titanium/aluminum or titanium/aluminum/titanium in sequence from a bottom layer to a top layer, and a reflective region is formed on a corresponding upper surface thereof, in a case where no voltage is applied, the phase delay of light passing through the reflective region is maximum, and after the voltage is applied to the reflective electrodes, the liquid crystal layer 20 in the reflective region generates a vertical deflection angle, and the phase delay of light passing through the reflective region is reduced, and the higher the voltage is, the larger the vertical deflection angle of the liquid crystal is, and the smaller the phase delay is.
Further, the liquid crystal layer 20 employs positive liquid crystal. In this embodiment, the liquid crystal layer 20 is an ECB type liquid crystal (electrically controlled birefringence liquid crystal), the liquid crystal cell satisfies Δ nd > 2 π, the liquid crystal is a positive liquid crystal, and the liquid crystal arrangement is an ECB parallel arrangement.
It should be explained that the ECB type liquid crystal is a color liquid crystal that can display a plurality of colors by voltage control. Based on the difference of the internal structure principle, the ECB is divided into three types of vertically aligned liquid crystal (DAP), parallel alignment and mixed alignment nematic (HAN) of LB film orientation, wherein the DAP liquid crystal is formed by aligning nematic liquid crystal with negative dielectric anisotropy vertical to the surface of a liquid crystal box; the parallel type arrangement mode adopts a parallel orientation liquid crystal box in which the long axis of nematic liquid crystal molecules with positive dielectric anisotropy and a substrate are arranged in parallel along the surface; the HAN type liquid crystal is formed by arranging one side of nematic liquid crystal with positive dielectric anisotropy vertical to the surface of a liquid crystal box, and arranging the other side of the nematic liquid crystal parallel to the surface of the liquid crystal box;
when the ECB type liquid crystal display device is electrified, the included angle theta between the long axis of the liquid crystal molecules and an electric field is changed due to different voltages, so that the birefringence of a liquid crystal box is changed. When linearly polarized light irradiates the liquid crystal box, different phase delays are formed under different birefringence indexes, and therefore the device has phase modulation capability.
Referring to fig. 2, the Pixel electrode pattern and arrangement of the present invention is shown, the first Pixel electrodes 35 are distributed in a rectangular array, and the second Pixel electrodes 37 are disposed opposite to the gap between two adjacent first Pixel electrodes 35. Specifically, in the figure, 1 is the first pixel electrode 35, 2 is the second pixel electrode 37, both of which are in a square structure, in this embodiment, two opposite sides of the first passivation layer 36 are formed with a limiting groove, for respectively accommodating the first pixel electrode 35 and the second pixel electrode 37, so that the first pixel electrode 35, the second pixel electrode 37 and the first passivation layer 36 disposed at two sides of the first passivation layer 36 are located at the same horizontal plane, thereby ensuring the reflection effect, and in addition, the limiting groove can be used to limit the position between the first pixel electrode 35 and the second pixel electrode 37, therefore, the adjacent first Pixel electrode 35 and the second Pixel electrode 37 are arranged alternately, and the gap between the two adjacent Pixel electrodes only needs to consider the problem of alignment deviation (about less than 1 um) in the manufacturing process, so as to ensure that the first Pixel electrode 35 and the second Pixel electrode 37 are not overlapped after the manufacturing process, thereby improving the aperture ratio to the maximum extent.
Referring to fig. 4, a second passivation layer 40 is disposed on a side of the second pixel electrode 37 facing the liquid crystal layer 20. In the present embodiment, the first passivation layer 36 and the second passivation layer 40 are made of the same material, specifically, silicon dioxide, but not limited thereto, and may also be silicon nitride, wherein the second passivation layer 40 is used to protect the second pixel electrode 37, and prevent metal oxidation or other influences generated by cleaning and other process steps after the second pixel electrode 37 is manufactured, so as to influence the reflectivity of the second pixel electrode 37.
The lower substrate further includes a first storage capacitor 51 electrically connected to the first pixel electrode 35, and a second storage capacitor 52 electrically connected to the second pixel electrode 37. The first storage capacitor 51 and the second storage capacitor 52 are used for respectively providing a continuously stable voltage to the first pixel electrode 35 and the second pixel electrode 37, so that the liquid crystal layer 20 maintains a stable deflection angle, and further, a phase modulation effect is ensured, so that a displayed picture can be continuously maintained until a picture is updated next time.
Referring to FIG. 3, which is a graph of phase delay versus Pixel voltage in the first embodiment, when the phase delay of Pixel A is 2 π, the phase delay of Pixel B is also 2 π, and the voltage VA-2 π of Pixel electrode A is higher than the voltage VB-2 π of Pixel electrode B.
Specifically, a first electrical connection pin 351 extends from the first pixel electrode 35 toward one side of the lower glass substrate 31, and the first electrical connection pin 351 passes through the organic planarization layer 34 and is connected to the first storage capacitor 51; a second power connection pin extends from the second pixel electrode 37 to a side of the lower glass substrate 31, and the second power connection pin sequentially passes through the first passivation layer 36 and the organic planarization layer 34 to be connected to the second storage capacitor 52. In the present embodiment, the outer diameter of the electrical leads is gradually reduced toward the lower glass substrate 31 to form an inverted cone structure, and it can be understood that the storage capacitor is more easily electrically connected through the organic planarization layer 34 and/or the first passivation layer 36 by the inverted cone structure design.
Further, a phase compensation film 70 is provided on the side of the upper glass substrate 11 facing away from the liquid crystal layer 20. When the phase compensation film 70 is added above the liquid crystal layer 20 so that the phase retardation of the first pixel electrode 35 is 0, the phase retardation of the second pixel electrode 37 can also reach the state of 0. At this time, the voltage VA-0 of the first pixel electrode 35 is also higher than the voltage VB-0 of the second pixel electrode 37, and the phase modulation capacities of the first pixel electrode 35 and the second pixel electrode 37 under different gray scales are consistent, so that the aperture ratio of pixels is improved, the light utilization rate of the device is improved, and the phase modulation performance of the device is optimized.
Further, liquid crystal alignment layers 60 are respectively disposed on opposite sides of the liquid crystal layer 20. Specifically, one of the liquid crystal alignment layers 60 is disposed between the liquid crystal layer 20 and the common electrode 12, and the other liquid crystal alignment layer 60 is disposed between the second passivation layer 40 and the liquid crystal layer 20, and the liquid crystal alignment layer 60 is mainly composed of polyimide and DMA, NMP, or BC. The solid components of the alignment layer are micromolecular compounds in the stock solution, the micromolecular compounds generate polymerization reaction at high temperature to form long-chain macromolecular solid polymer polyamide with a plurality of branched chains, the included angle between the branched chain and the main chain in the polymer molecule is the pretilt angle of the guide layer, the acting force between the branched chain groups of the polymers and the liquid crystal molecules is stronger, the anchoring effect is realized on the liquid crystal molecules, and the liquid crystals can be arranged in the pretilt angle direction.
Referring to fig. 5, a flow chart of a method for manufacturing a glass-based liquid crystal phase modulation device according to a second embodiment of the present invention is shown, the method comprising:
step S101, laying a first thin film transistor and a second thin film transistor on the upper surface of a lower glass substrate, and adjusting the first thin film transistor and the second thin film transistor to be in the same horizontal plane;
step S102, covering an organic flat layer on the upper surfaces of the first thin film transistor and the second thin film transistor;
step S103, laying a first pixel electrode and a first passivation layer on the upper surface of the organic flat layer in sequence, and aligning the first pixel electrode and the first passivation layer;
step S104, laying a second pixel electrode on the upper surface of the first passivation layer, and aligning the second pixel electrode with the first passivation layer so as to control the process alignment deviation between the first pixel electrode and the second pixel electrode within a preset range, thereby forming a lower substrate;
step S105, lay public common electrode in order to form the upper substrate on the upper glass substrate, will the upper substrate with one side coating one deck alignment layer that the infrabasal plate corresponds each other, it is right after rubbing or optical alignment technology is carried out to the alignment layer the glass edge coating in infrabasal plate display area encloses the frame glue the frame is sealed in the frame glue the last liquid crystal of dripping of image layer will under the vacuum environment the upper substrate with the infrabasal plate is counterpointed the laminating, under ultraviolet ray illumination establishes and the heating is adjusted, seals the frame and glues the solidification, forms glass base liquid crystal phase position modulating device.
Specifically, the gap between two adjacent Pixel electrodes only needs to consider the problem of alignment deviation in the manufacturing process, that is, the preset range is controlled within 1um, so that the first Pixel electrode 35 and the second Pixel electrode 37 are not overlapped after the manufacturing process, and the aperture ratio is improved to the maximum extent.
In summary, in the glass-based liquid crystal phase modulation device and the manufacturing method in the embodiments of the present invention, the aperture ratio is improved by adopting the double-layer Pixel electrode structure and arranging the first Pixel electrode and the second Pixel electrode in a staggered manner, and specifically, the first Pixel electrode and the second Pixel electrode are arranged on two opposite sides of the first passivation layer and arranged in a staggered manner, in the actual production process, the gap between the first Pixel electrode and the second Pixel electrode is reduced by adjusting the process alignment deviation between the first Pixel electrode and the second Pixel electrode, so as to greatly improve the aperture ratio, and solve the technical problems in the prior art that the aperture ratio of the Pixel electrode of the glass-based liquid crystal phase modulation device is difficult to improve, the utilization rate of the phase modulation light is reduced, and the gap is large to form high-order diffraction to generate stray light.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, various changes and modifications can be made without departing from the spirit of the invention, and these changes and modifications are all within the scope of the invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A glass-based liquid crystal phase modulation device comprises an upper substrate, a lower substrate and a liquid crystal layer arranged between the upper substrate and the lower substrate, and is characterized in that the upper substrate comprises an upper glass substrate and a common electrode arranged from the upper glass substrate to one side of the liquid crystal layer;
the lower substrate comprises a lower glass substrate, a first thin film transistor and a second thin film transistor, wherein the first thin film transistor and the second thin film transistor are arranged from the lower glass substrate to one side of the liquid crystal layer, are positioned on the same layer, and are covered with an organic flat layer;
a first pixel electrode, a first passivation layer and a second pixel electrode are sequentially arranged on one side of the organic flat layer facing the liquid crystal layer, and the first pixel electrode and the second pixel electrode are arranged in a staggered mode;
the first thin film transistor and the second thin film transistor are used for respectively controlling the voltage on the first pixel electrode and the voltage on the second pixel electrode.
2. The glass-based liquid crystal phase modulation device according to claim 1, wherein the first pixel electrodes are distributed in a rectangular array, and the second pixel electrodes are disposed opposite to a gap between two adjacent first pixel electrodes.
3. The device of claim 1, wherein the lower substrate further comprises a first storage capacitor electrically connected to the first pixel electrode and a second storage capacitor electrically connected to the second pixel electrode.
4. The device of claim 3, wherein a first contact pin extends from the first pixel electrode toward the lower glass substrate, and the first contact pin passes through the organic planarization layer and connects to the first storage capacitor; and a second electric connecting pin extends from one side of the second pixel electrode facing the lower glass substrate, and the second electric connecting pin sequentially penetrates through the first passivation layer and the organic flat layer to be connected with the second storage capacitor.
5. The glass-based liquid crystal phase modulation device according to claim 1, wherein a side of the upper glass substrate facing away from the liquid crystal layer is provided with a phase compensation film.
6. The glass-based liquid crystal phase modulation device according to claim 1, wherein the liquid crystal layer employs a positive liquid crystal.
7. The glass-based liquid crystal phase modulation device according to claim 1, wherein the first thin film transistor and the second thin film transistor are of one of amorphous silicon, polycrystalline silicon, or metal oxide type.
8. The glass-based liquid crystal phase modulation device according to claim 1, wherein a voltage of the first pixel electrode is higher than a voltage of the second pixel electrode.
9. The glass-based liquid crystal phase modulation device according to claim 2, wherein a side of the second pixel electrode facing the liquid crystal layer is provided with a second passivation layer.
10. A method for producing a glass-based liquid crystal phase modulation device, for producing the glass-based liquid crystal phase modulation device according to any one of claims 1 to 9, comprising:
laying a first thin film transistor and a second thin film transistor on the upper surface of a lower glass substrate, and adjusting the first thin film transistor and the second thin film transistor to be in the same horizontal plane;
covering an organic flat layer on the upper surfaces of the first thin film transistor and the second thin film transistor;
sequentially laying a first pixel electrode and a first passivation layer on the upper surface of the organic flat layer, and aligning the first pixel electrode and the first passivation layer;
laying a second pixel electrode on the upper surface of the first passivation layer, and aligning the second pixel electrode with the first passivation layer so as to control the alignment deviation of the manufacturing process between the first pixel electrode and the second pixel electrode within a preset range, thereby forming a lower substrate;
lay public common electrode in order to form the upper substrate on last glass substrate, will the upper substrate with one side coating one deck alignment layer that the infrabasal plate corresponds each other, it is right after rubbing or optical alignment technology is carried out to the alignment layer the infrabasal plate display area's glass edge coating round frame sealing glue seal in the frame sealing glue the last liquid crystal of dropping on the image layer of registering, will under vacuum environment the upper substrate with the infrabasal plate is counterpointed the laminating, under ultraviolet irradiation establishes and heating regulation, seals the frame and glues the solidification, forms glass base liquid crystal phase position modulation device.
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| CN107526220A (en) * | 2016-06-16 | 2017-12-29 | 三星显示有限公司 | Display device and its manufacture method |
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Application publication date: 20220412 |