CN100507655C - Liquid crystal display and manufacturing method thereof - Google Patents

Abstract

The invention provides a liquid crystal display, which comprises a liquid crystal display panel and two first flexible circuit boards, wherein the liquid crystal display panel is provided with a peripheral area, a heating layer is arranged on the liquid crystal display panel, and the two first flexible circuit boards are electrically connected to the heating layer and are used for transmitting a voltage to the heating layer to generate heat energy. At least one of the first flexible circuit board has a narrow part and a wide part, and the narrow part is fixed on the peripheral area of the liquid crystal display panel and connected with the heating layer. The liquid crystal display utilizes the design that the heating layer and the flexible circuit board are matched with the temperature sensor, and can quickly raise the temperature of liquid crystal when the operation of the liquid crystal display is in a low-temperature state, so that the liquid crystal display can normally operate in a very short time.

Description

Liquid crystal display and manufacturing method thereof

technical field

The invention relates to a photoelectric device and its manufacturing method, especially to a liquid crystal display with a heating layer and its manufacturing method.

Background technique

Due to its light and thin size, liquid crystal displays have been widely used in various portable electronic products, satellite navigation systems of transportation vehicles, and outdoor large-scale display devices. However, in practical applications, liquid crystal displays are inconvenient to use due to the characteristic that liquid crystals cannot operate normally at low temperatures. When the liquid crystal is in a low temperature state, the liquid crystal must be irradiated by the backlight for a period of time after the liquid crystal display is turned on, and the liquid crystal can only operate normally after its temperature rises to the normal operating temperature range. For example, if a car in a cold zone is equipped with a satellite navigation system equipped with a liquid crystal display, the liquid crystal display can only be operated after a period of time after the car is started, which may affect driving safety.

Contents of the invention

One of the objectives of the present invention is to provide a liquid crystal display to overcome the limitations in the application of the liquid crystal display.

To achieve the above purpose, the present invention provides a liquid crystal display. The liquid crystal display above, including:

A liquid crystal display panel, including a peripheral area;

a heating layer disposed on the liquid crystal display panel; and

Two first flexible printed circuits (FPCs), electrically connected to the heating layer, for transmitting a voltage to the heating layer to generate heat;

At least one of the first flexible circuit boards has a narrow portion and a wide portion, and the narrow portion is fixed on the peripheral area of the liquid crystal display panel and connected to the heating layer.

To achieve the above purpose, the present invention further provides a liquid crystal display. The above LCD display includes:

a first substrate;

a heating layer formed on the inner surface of the first substrate;

an insulating layer formed on the heating layer and having at least one first opening;

At least one switching element is formed on the first substrate, and has a gate connected to the scan line, a source connected to the data line, and a drain;

At least two contact pads are formed on the insulating layer and electrically connected to the scan line and the data line respectively;

at least one capacitor formed on the insulating layer;

at least one bridging electrode formed in the first opening;

At least one protective layer covers the switching element and the capacitor, and has a plurality of second openings respectively exposing the contact pad and the bridge electrode; wherein, the bridge electrode is electrically insulated from the contact pad;

at least one pixel electrode formed on the protection layer and electrically connected to the drain of the switching element;

a second substrate with a common electrode disposed on the first substrate; and

A liquid crystal layer is arranged between the first substrate and the second substrate.

The liquid crystal display of the present invention uses the design of the heating layer and the flexible circuit board to cooperate with the temperature sensor. When the operation of the liquid crystal display is at a low temperature, the temperature of the liquid crystal can be rapidly increased, so that the liquid crystal display can operate normally in a very short time. .

Description of drawings

1 and 2 are schematic diagrams of a method for forming a liquid crystal display according to an embodiment of the present invention.

FIG. 3 is an enlarged schematic view of the first flexible circuit board of this embodiment.

4 to 8 are schematic diagrams of a method for manufacturing a liquid crystal display according to another embodiment of the present invention.

FIG. 9 is a schematic diagram of another embodiment of the test pad of the liquid crystal display panel of the present invention.

10 to 12 are schematic diagrams of liquid crystal displays in other embodiments of the present invention.

FIG. 13 is a schematic diagram of an optoelectronic device of the present invention.

reference number;

10 LCD panel 12 Array substrate

14 Color filter substrate 16 Liquid crystal layer

18 Peripheral zone 20 Heating layer

22 The first flexible circuit board 22a Narrow part

22b Wide part 23 Joints

24 Second flexible circuit board 26 Printed circuit board

30 First substrate 32 Display area

34 Peripheral zone 36 Heating layer

38 Insulation layer 42 Switching element

44 Gate 45 Gate insulating layer

46 Scanning Line 47 Semiconductor Layer

48 Source 49 Capacitor Dielectric Layer

50 Data Line 52 Drain

54 Scanning line contact pad 56 Data line contact pad

57 Bottom Electrode 58 Capacitance

59 Upper electrode 60 Bridge electrode

61 Conductor 62 Protective layer

64 Second opening 66 Transparent conductive layer

70 Second Substrate 72 Shared Electrode

74 Liquid crystal layer 80 The first flexible circuit board

82 Printed Circuit Board 84 Second Flexible Circuit Board

86 Printed circuit board 90 Photoelectric device

92 LCD Display 94 Electronic Components

96 test pads

Detailed ways

The following are detailed descriptions and accompanying drawings of the present invention. However, the drawings are only for reference and auxiliary description, and are not used to limit the present invention.

Please refer to Figure 1 and Figure 2. 1 and 2 are schematic diagrams of a method for forming a liquid crystal display according to an embodiment of the present invention, wherein FIG. 1 is a top view of the liquid crystal display, and FIG. 2 is a schematic cross-sectional view of the liquid crystal display of FIG. 1 along the section line AA'. As shown in Figures 1 and 2, a liquid crystal display panel 10 is first provided, wherein the liquid crystal display panel 10 mainly includes a first substrate 12 with an array layer (not shown), a first substrate 12 with a shared electrode (not shown). The second substrate 14 and a liquid crystal layer 16 are disposed between the first substrate 12 and the second substrate 14 , and the liquid crystal display panel 10 has at least one peripheral area 18 . Wherein, in order to display color images, the liquid crystal display panel 10 includes a color filter layer (not shown) disposed on one of the first substrate 12 and the second substrate 14 . In other words, the color filter layer can be selectively disposed on the second substrate 14, that is, between the second substrate 14 and the common electrode, or disposed on the first substrate 12, that is, the first substrate 12 and the active layer (Fig. not shown) and one of above the array layer. In this embodiment, there is an array layer on the first substrate 12, also referred to as an array substrate, a color filter layer on the second substrate 14, also referred to as a color filter substrate, and a liquid crystal layer 16 located on The space between the first substrate 12 and the second substrate 14 is an example, but not limited thereto. Next, a heating layer 20 is formed on the outer surface of the second substrate 14 of the liquid crystal display panel 10 , and then two first flexible circuit boards 22 are respectively fixed on the heating layer 20 in the peripheral area 18 of the liquid crystal display panel 10 . In this embodiment, the two first flexible circuit boards 22 are respectively fixed on the heating layer 20 of the peripheral area 18 on two opposite sides of the liquid crystal display panel 10 as an example, but it is not limited thereto. The above two first flexible circuit boards 22 can be selectively fixed on the heating layer 20 of the adjacent peripheral area 18 of the liquid crystal display panel 10 or on the heating layer 20 of the non-opposite peripheral area 18 . In addition, in this embodiment, the two first flexible circuit boards 22 are arranged on at least one of the two outer surfaces of the liquid crystal display panel 10, but it is not limited thereto, and the first flexible circuit board 22 can also be selectively arranged according to design requirements. The number of flexible circuit boards 22 can be increased or decreased, that is, 1, 2, 3, 4, 5, 6 first flexible circuit boards 22 can be selectively provided. In addition, the number of the peripheral areas 18 can be selectively 1, 2, 3, 4, etc. The present embodiment takes 2 peripheral areas 18 as an example, but it is not limited thereto.

In this embodiment, in order to avoid affecting the light transmittance of the liquid crystal display, preferably the heating layer 20 can use a transparent conductive layer (such as: indium tin oxide, indium zinc oxide, aluminum zinc oxide, cadmium tin oxide material, aluminium oxide, or other materials, or combinations of the above) are examples, but not limited to, opaque conductive layers, light-shielding conductive layers, and reflective conductive layers, such as gold, silver, copper, and iron, can also be used selectively. , tin, lead, cadmium, molybdenum, tungsten, titanium, tantalum, aluminum, or other materials, or the above-mentioned alloys, or the above-mentioned nitrides, or the above-mentioned oxides, or a combination of the above, or a transparent conductive layer and A combination of at least one of an opaque conductive layer, a light-shielding conductive layer, and a reflective conductive layer. In addition, the heating layer 20 in this embodiment is a single-layer material as an example, but multiple layers of materials can also be selectively used according to design requirements, such as: 2 layers, 3 layers, 4 layers, 5 layers etc. In order to make the first flexible circuit board 22 more firmly fixed on the heating layer 20, preferably, a bonding material 23 such as a conductive glue, solder, conductive tape, non-conductive glue may be used to contain or not contain conductive particles, The non-conductive tape contains or does not contain conductive substances, etc., and fixes the first flexible circuit board 22 on the heating layer 20, whereby the first flexible circuit board 22 can transmit a voltage to the heating layer 20, so that the corresponding liquid crystal The heating layer 20 on two opposite sides of the display panel 10 generates heat energy due to the voltage difference. In this embodiment, the conductive adhesive is used as the bonding object 23 to be disposed between the heating layer 20 and the first flexible circuit board 22, and the first flexible circuit board 22 is fixed on the heating layer 20 as an example, but not Limited to this, the bonding object 23 can also be disposed on the heating layer 20 and the first flexible circuit board 22 , or a combination of the above-mentioned disposition positions, depending on the materials used. In addition, the liquid crystal display further includes at least one second flexible circuit board 24 disposed on the liquid crystal display panel 10 to transmit signals required by the liquid crystal display panel 10 . In addition, in order to simplify the contacts for providing the signals required by the liquid crystal display panel 10, preferably, a printed circuit board (PCB) 26 can be connected to at least one of the first flexible circuit board 22 and /or the second flexible circuit board 24 is connected.

Please refer to FIG. 3 again, and refer to FIG. 1 and FIG. 2 together. FIG. 3 is an enlarged schematic view of the first flexible circuit board 22 of this embodiment. As shown in FIG. 3 , this implementation is based on two first flexible circuit boards 22 having both a narrow portion 22a and a width 22b as an example, but it is not limited to this, and the first flexible circuit board of this embodiment can also be designed according to the design. At least one of the permanent circuit boards 22 has a narrow portion 22 a and a wide portion 22 b, and the narrow portion 22 a is connected to the heating layer 20 , and a part of the wide portion 22 b protrudes from the liquid crystal display panel 10 . The narrow portion 22a of the first flexible circuit board 22 has a first width w1, and the wide portion has a second width w2, and the ratio of w1/w2 is preferably substantially between 0.1-0.9, but not limited to this.

The first flexible circuit board 22 of the present invention has designs with different widths, and the main consideration is to prevent the size of the first flexible circuit board 22 from being too large beyond the range of the peripheral area 18 of the liquid crystal display panel 10, thereby affecting the display area. light transmittance, so it has a narrow portion 22a design, but at the same time because the first flexible circuit board 22 must be bent to the bottom of the liquid crystal display panel 10, and this bending is easy to cause the first flexible circuit board 22 In this case, the first flexible circuit board 22 itself needs to have considerable strength, so the first flexible circuit board 22 has a design of the wide portion 22b.

In the above embodiment, the first flexible circuit board 22 and the second flexible circuit board 24 are connected on the same printed circuit board 26, but the application of the present invention is not limited thereto, the first flexible circuit board 22 The second flexible circuit board 24 can also be connected to different printed circuit boards according to different design concepts, or at least one of the first flexible circuit board 22 and the second flexible circuit board 24 is not connected to printed circuit board. In addition, the position of the heating layer 20 is not limited to being disposed on the outer surface of the second substrate 14, and may also be selectively disposed on the outer surface of the first substrate 12, and simultaneously disposed on the outer sides of the first substrate 12 and the second substrate 14. surface, disposed on the inner surface of the first substrate 12, disposed on the inner surface of the second substrate 14, simultaneously disposed on the inner surface of the first substrate 12 and the inner surface of the second substrate 14, and simultaneously disposed on the inner side of the first substrate 12 The surface and the outer surface of the second substrate 14 are disposed on the outer surface of the first substrate 12 and the inner surface of the second substrate 14 at the same time, or a combination thereof. Also, sometimes in order to reduce the influence of the rigid material of the printed circuit board 26, the printed circuit board 26 may not be used as a signal transmission terminal, but the second flexible circuit board 24 is used to connect to the first flexible circuit At least one of the boards 22 transmits the signal required by the liquid crystal display panel 10 and the voltage required by the heating layer 20 at the same time.

Please refer to Figure 4 to Figure 8. 4 to 8 are schematic diagrams of a method for manufacturing a liquid crystal display according to another embodiment of the present invention, wherein FIG. 4 is a top view of the liquid crystal display, and FIG. 5 is a schematic cross-sectional view of the liquid crystal display of FIG. 4 along the section line BB' for displaying Switching elements, FIG. 6 is a schematic cross-sectional view of the liquid crystal display of FIG. 4 along the section line CC', used to display the scanning line contact pads, and FIG. 7 is a schematic cross-sectional view of the liquid crystal display of FIG. 4 along the section line DD', used to display the data lines Contact pads, FIG. 8 is a schematic cross-sectional view of the liquid crystal display in FIG. 4 along the section line EE', used to show the bridging electrodes, and in order to highlight the characteristics of this embodiment, some components such as the second substrate and the liquid crystal layer are not shown in FIG. 4 middle.

As shown in FIGS. 4 to 8 , a first substrate 30 is firstly provided, wherein the first substrate 30 includes a display area 32 and at least one peripheral area 34 , wherein a plurality of pixel areas pix are disposed in the display area 32 . Then a heating layer 36 is sequentially formed on the first substrate 30, and an insulating layer 38 is formed on the heating layer 36, and the insulating layer 38 has at least one first opening (as shown in FIG. 8 ), exposing part of the heating layer. Layer 36. Subsequently, a plurality of switching elements 42 are fabricated on the first substrate 30, such as thin film transistors. Each switching element 42 has a gate 44 connected to a scanning line 46, a source 48 connected to a data line 50, and a Drain 52 . It is worth noting that during the step of forming the scan line 46 and/or the data line 50, the method of this embodiment further includes the fabrication of the following elements:

1. During the step of forming the scan line 46 and/or the data line 50 , a capacitor 58 is also formed on the first substrate 30 .

2. During the step of forming the scan line 46 and/or the data line 50, at least one bridge electrode 60 is formed in the first opening of the insulating layer 38, wherein the bridge electrode 60 is electrically connected to the heating layer 36, but is not connected to the scan line. The wire 46 and the data wire 50 are electrically insulated.

3. During the step of forming the scanning line 46, at least one scanning line contact pad 54 is formed on the first substrate 30 together, and when the step of forming the data line 50 is formed, at least one data line contact pad 56 is formed together, and The scan line contact pad 54 and the data line contact pad 56 are electrically connected to the scan line 46 and the data line 50 respectively, so as to further connect the scan line 46 and the data line 50 to the driving circuit.

4. During the step of forming the scanning line 46 and/or the data line 50, at least one conductive line 61 (as shown in FIG. 4 ) can be formed on the first substrate 30 together, wherein the conductive line 61 is composed of the scanning line 46 and the data line 50, at least one of which is made of the same conductive layer, and its function is to facilitate the electrical connection between the bridging electrode 60 and the flexible circuit board to be installed later.

It is worth noting that the material of at least one of the bridge electrode 60 , the scan line contact pad 54 , the data line contact pad 56 and the wire 61 is substantially the same as that of at least one of the scan line 46 and the data line 50 . It is also worth noting that the scan line contact pad 54 and the data line contact pad 56 of this embodiment, if there are no other test pads, can also be selectively used as test pads, so as to test before the drive circuit is installed. Signals can be input through the scan line contact pad 54 and the data line contact pad 56 . According to the different designs of the liquid crystal display panel, the liquid crystal display panel of the present invention may also be provided with a test pad 96 which simply performs a test function. Please refer to Figure 9. FIG. 9 is a schematic diagram of another embodiment of the test pad 96 of the liquid crystal display panel of the present invention. As shown in FIG. 9 , different from the previous embodiments, the test pads 96 of this embodiment are arranged on the outer side of the peripheral region 34 of the first substrate 30 than the scan line contact pads 54 and the data line contact pads 56 , and test The pad 96 is electrically connected to the scan line 46 and the data line 50 , so that the electrical test can be performed through the test pad 96 even when the driving circuit is connected to the scan line contact pad 54 and the data line contact pad 56 .

Please continue to refer to FIG. 4 to FIG. 8 . Subsequently, at least one protective layer 62 is formed on the first substrate 30 to cover the switching element 42 and the capacitor 58, and the protective layer 62 has a plurality of second openings 64, respectively exposing the scanning line contact pad 54 and the data line. The contact pad 56 , the capacitor 58 and the bridge electrode 60 , wherein the bridge electrode 60 , the scan line contact pad 54 and the data line contact pad 56 are substantially electrically insulated.

Then at least one transparent conductive layer 66 is formed on the protective layer 62 and the capacitor 58. The transparent conductive layer 66 is used as a pixel electrode in the display area 32, and in this embodiment, the capacitor 58 is electrically connected to the switching element 42 through the pixel electrode. The drain 52 of the capacitor 58, but also optionally in the protective layer 62 on the capacitor 58, there is no second opening 64, that is, the capacitor 58 is not exposed but is covered by the transparent conductive layer 66. On the other hand, in this embodiment, the transparent conductive layer 66 can be selectively formed on at least one of the scanning line contact pad 54, the data line contact pad 56 and the bridge electrode 60, so as to facilitate the subsequent external connection of the above-mentioned components. , but not limited to this. In addition, it is worth noting that the transparent conductive layer 66 as the pixel electrode and the transparent conductive layer 66 formed on the scanning line contact pad 54, the data line contact pad 56 and the bridge electrode 60 need different signal connections respectively, so they are substantially connected to each other. The top is insulated.

In addition, in this embodiment, the capacitor 58 is composed of a lower electrode 57 (hereinafter referred to as the first metal layer) fabricated simultaneously with the scanning line 46, and an upper electrode 59 (hereinafter referred to as the layer) fabricated simultaneously with the data line 50. The material is the second metal layer), and the capacitor dielectric layer 49 is composed of the gate insulating layer 45 and the semiconductor layer 47, and the upper electrode 59 is electrically connected to the transparent conductive layer 66, but the structure of the capacitor 58 is not limited to This can be of other types. For example, the capacitor dielectric layer 49 used by the above-mentioned type of capacitor can use the gate insulating layer 45 or the semiconductor layer 47 alone, or the upper electrode 59 can be insulated from the transparent conductive layer 66, or the capacitor 58 can be made of the first metal layer, the second Any two of the two metal layers and the transparent conductive layer 66 are used as electrodes, and at least one dielectric layer therebetween is used as a capacitor dielectric layer, or the capacitor 58 may also include a first metal layer, a second metal layer and a dielectric layer therebetween. The first capacitor formed by the electrical layer, the second capacitor formed by the second metal layer, the transparent conductive layer 66 and the dielectric layer included therebetween such as the protective layer 62 , and other various capacitor structures.

In addition, the pixel electrode of this embodiment is made of a transparent conductive layer (such as: indium tin oxide, indium zinc oxide, aluminum zinc oxide, cadmium tin oxide, tungsten oxide, or other materials, or a combination of the above) as Examples of implementation, but not limited to this, can also be used selectively, opaque conductive layer, light-shielding conductive layer, reflective conductive layer, such as: gold, silver, copper, iron, tin, lead, cadmium, molybdenum, tungsten, titanium, tantalum , aluminum, or other materials, or the above-mentioned alloys, or the above-mentioned nitrides, or the above-mentioned oxides, or a combination of the above-mentioned or a combination of a transparent conductive layer and an opaque conductive layer, a light-shielding conductive layer, and a light-reflective conductive layer. In addition, the pixel electrode in this embodiment is taken as an implementation example with a single layer of material, but multiple layers of material can also be selectively used according to design requirements, such as: 2 layers, 3 layers, 4 layers, 5 layers, etc. wait. In addition, the structure of the switching element 42 described in this embodiment is a bottom-gate thin film transistor (such as: back-channel etching type, etching stop type, or other types) as an example, but it is not limited thereto, and can also be A top gate type thin film transistor is selectively used. In addition, the types of the thin film transistors include N-type thin film transistors and/or P-type thin film transistors. Moreover, the material of the semiconductor layer described in this embodiment includes silicon-containing polycrystalline material, silicon-containing single crystal material, silicon-containing microcrystalline material, silicon-containing amorphous material, and the above-mentioned crystalline material containing germanium, Or other materials, or a combination of the above. Furthermore, in order to reduce the resistance between the semiconductor layer and the source/drain 48/52, preferably, a doped semiconductor layer (not shown) will be formed between the semiconductor layer and the source/drain 48/52 Or the semiconductor layer where the source/drain 48/52 contacts is the doped semiconductor layer. In addition, the semiconductor layer in this embodiment is undoped as an example, but not limited thereto, and at least one doped layer with a lower concentration can also be selectively formed therein.

Subsequently, a second substrate 70 having a common electrode 72 is provided, and the second substrate 70 is bonded to the first substrate 30 , and a liquid crystal layer 74 is formed between the first substrate 30 and the second substrate 70 . Wherein, a color filter layer (not shown) is disposed on one of the first substrate 12 and the second substrate 14 . In other words, the color filter layer can be selectively disposed on the second substrate 14, that is, between the second substrate 14 and the common electrode, or disposed on the first substrate 12, that is, the first substrate 12 and the active layer (Fig. not shown) and one of above the array layer.

Next, a first flexible circuit board 80 is arranged on the upper surface of the first substrate 30, the first flexible circuit board 80 is electrically connected to the bridging electrodes 60 through wires 61, and the first flexible circuit board 80 The other end is connected to a printed circuit board 82 , so that the voltage generated by the printed circuit board 82 can reach the heating layer 36 through the first flexible circuit board 80 , the wire 61 and the bridge electrode 60 in sequence. In this way, when the temperature of the liquid crystal layer 74 is too low, the heating layer 36 can raise the temperature of the liquid crystal layer 74 to within a normal operating temperature range in a very short time. In addition, in this embodiment, the first flexible circuit board 80 is also responsible for transmitting the signals required by the liquid crystal display. In this embodiment, the bridging electrodes 60 are in contact with the heating layer 36 . However, the bridging electrodes 60 can also be optionally not used, and the pixel electrodes on the heating layer 36 are connected to the heating layer 36 and the wires 61 .

Please refer to FIG. 10 to FIG. 12 , and also refer to FIG. 5 to FIG. 8 . 10 to 12 are schematic diagrams of liquid crystal displays in other embodiments of the present invention. In order to compare the differences between the various embodiments, the following embodiments use the same symbols as the embodiments in FIGS. 4 to 8 , and the similarities are different. The description will be repeated, and only the differences between the embodiments will be described below. As shown in FIG. 10, the liquid crystal display of this embodiment further includes at least one second flexible circuit board 84, which is arranged on the bridging electrode 60, and the second flexible circuit board 84 and the first flexible circuit board 80 are all connected to a printed circuit board 82, wherein the first flexible circuit board 80 is responsible for transmitting the signal required by the liquid crystal display, and the second flexible circuit board 84 is responsible for transmitting the voltage required by the heating layer. Wherein, the present implementation takes the two first flexible circuit boards 80 as an example, and the designs described in FIGS. 1 to 3 can also be optionally adopted as examples of implementations with narrow portions and widths, but it is not limited thereto. It can also be designed so that at least one of the first flexible circuit boards 80 of this embodiment has a narrow portion and a wide portion, and the narrow portion is connected to the heating layer 36, while a part of the wide portion protrudes from the liquid crystal display. In addition to the panels, the number can also be described in the above-mentioned embodiments.

As shown in FIG. 11 , the second flexible circuit board 84 of this embodiment is connected to another printed circuit board 86 respectively, while the first flexible circuit board 80 is connected to the printed circuit board 82 instead of as described above. In the embodiment, both the first flexible circuit board 80 and the second flexible circuit board 84 are connected to the same printed circuit board, but it is not limited thereto.

As shown in FIG. 12, the second flexible circuit board 84 of this embodiment, for example, is first connected to the first flexible circuit board 80, and the first flexible circuit board 80 is then connected to the printed circuit board 82, but Not limited to this.

It is worth noting that the design of the present invention can be applied to various optoelectronic devices, and is not limited to the implementations disclosed in the above-mentioned embodiments. Please refer to Figure 13. FIG. 13 is a schematic diagram of an optoelectronic device of the present invention. As shown in FIG. 13 , the liquid crystal display 92 described in the above embodiments can be combined with an electronic component 94 to form an optoelectronic device 90 . The electronic element 94 includes, for example, a control element, an operating element, a processing element, an input element, a storage element, a driving element, a light emitting element, a protection element, a sensing element, a detection element, or other functional elements, or a combination thereof. The type of photoelectric device 90 includes portable products (such as mobile phones, video cameras, cameras, notebook computers, game consoles, watches, music players, electronic letter transceivers, map navigators, digital photos, or similar products), audio-visual products ( such as AV projectors or similar products), screens, televisions, billboards, panels inside projectors, etc.

To sum up, the liquid crystal display of the present invention utilizes the design of the heating layer and the flexible circuit board to cooperate with the temperature sensor. When the operation of the liquid crystal display is at a low temperature, the temperature of the liquid crystal can be rapidly raised, so that the liquid crystal display can be operated in a very short time. normal operation for a period of time. It is also worth noting that the bridging electrodes in some embodiments of the present invention are used to enable the driving circuit to transmit signals to the heating layer, so they are different from the contact pads and/or test pads of the liquid crystal display panel in structure, and It is electrically insulated from contact pads and test pads, etc.

The above descriptions are only preferred embodiments of the present invention, and all equivalent changes and modifications made according to the claims of the present invention shall fall within the scope of the present invention.

Claims (15)

1. a LCD is characterized in that, this LCD comprises:

One display panels comprises a surrounding zone;

One zone of heating is arranged on the described display panels; And

Two first flexible circuit boards are electrically connected to described zone of heating, produce heat energy in order to transmit a voltage to this zone of heating;

Wherein said first flexible circuit board wherein at least one have one narrow with a wide portion, this narrow portion is fixed in the surrounding zone of described display panels and is connected with described zone of heating.

2. LCD as claimed in claim 1 is characterized in that, described display panels comprises array basal plate, a colored filter substrate, and a liquid crystal layer is located between this array base palte and this colored filter substrate.

3. LCD as claimed in claim 2 is characterized in that, described zone of heating is arranged on wherein at least one the surface of described array base palte and described colored filter substrate.

4. LCD as claimed in claim 1 is characterized in that, this LCD also comprises one second flexible circuit board, is arranged on the described display panels, to transmit the required signal of this display panels.

5. LCD as claimed in claim 4 is characterized in that, wherein at least one the wide portion of described first flexible circuit board is connected in described second flexible circuit board.

6. LCD as claimed in claim 4 is characterized in that this LCD also comprises, a printed circuit board (PCB), with described first flexible circuit board wherein at least one wide and described second flexible circuit board be connected.

7. LCD as claimed in claim 5 is characterized in that this LCD also comprises, and a printed circuit board (PCB) is connected with described second flexible circuit board.

8. LCD as claimed in claim 1 is characterized in that described zone of heating comprises a transparency conducting layer.

9. LCD as claimed in claim 1 is characterized in that, wherein at least one described narrow the width ratio with wide portion of described first flexible circuit board is between 0.1 to 0.9.

10. LCD as claimed in claim 1 is characterized in that, described first flexible circuit board is arranged at the relative both sides of described display panels respectively.

11. LCD as claimed in claim 1 is characterized in that, this LCD comprises a binding element in addition, so that described first flexible circuit board is fixed on the described zone of heating.

12. an electrooptical device is characterized in that this electrooptical device comprises LCD as claimed in claim 1.

13. a method that forms LCD, this LCD comprise display panels, a zone of heating and two first flexible circuit boards with a surrounding zone, it is characterized in that this method comprises:

Described display panels is provided;

Form described zone of heating on this display panels;

Fixing described two first flexible circuit boards on the zone of heating of the surrounding zone of this display panels, wherein said two first flexible circuit boards wherein at least one has one narrow and a wide portion, and this narrow portion is connected on the described zone of heating.

14. method as claimed in claim 13 is characterized in that, the mode of fixing described two first flexible circuit boards comprises formation one conducting resinl between described zone of heating and described two first flexible circuit boards.

15. method as claimed in claim 13 is characterized in that, the mode of fixing described two first flexible circuit boards comprises and forms a binding element on described two the first pliability electroplaxs or between described zone of heating and two first flexible circuit boards.

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