CN102566133A - Semi-transmitting semi-reflecting liquid crystal display - Google Patents

Abstract

An embodiment of the present invention provides a transflective liquid crystal display, comprising: a lower substrate, an upper substrate, and a liquid crystal layer located therebetween; an organic film insulating layer disposed on the side of the lower substrate facing the liquid crystal layer, The organic film insulating layer has an inclined edge, and the organic film insulating layer is provided with a first reflective metal layer except for the inclined edge; a second reflective metal layer is provided on the side of the upper substrate facing the liquid crystal layer, and the first reflective metal layer is arranged on the upper substrate. The two reflective metal layers are arranged on the upper substrate in the area corresponding to the inclined edge. The liquid crystal display has a relatively high aperture ratio, which can increase the passing efficiency of the backlight and improve its display effect.

Description

Transflective LCD Display

Technical field:

The invention relates to the technical field of liquid crystal display manufacture, in particular to a transflective liquid crystal display.

Background technique:

With the development of electronic science and technology, liquid crystal displays have been widely used in daily life. However, the display effect of the traditional fully transmissive liquid crystal display cannot meet the requirements of normal use in an environment with strong external light. Therefore, a transflective liquid crystal display appears.

The pixel structure of a transflective liquid crystal display includes a transmissive part and a reflective part. The transmissive part can emit the backlight from the backlight source to ensure the visibility of the liquid crystal display in a weak light environment. The reflective part includes The reflective metal layer can reflect the incident light from the outside, so as to ensure the contrast of the liquid crystal display and improve the display effect in the environment with strong external light. In a transflective liquid crystal display, the thickness of the liquid crystal cell in the reflective part is usually set to half the thickness of the liquid crystal cell in the transmissive part, so as to ensure that the optical path difference between the transmitted backlight and the reflected external light in the liquid crystal cell is consistent.

As shown in FIG. 1 , it is a schematic structural diagram of a common transflective liquid crystal display, and only one pixel unit is shown in the figure, including: a lower substrate 10 , an upper substrate 20 and a liquid crystal layer 30 disposed opposite to each other.

Wherein, the lower substrate 10 includes: a first glass substrate 101 , an organic film insulating layer 102 and a reflective metal layer 103 arranged in sequence toward the direction of the liquid crystal layer 30 . The corresponding area of the reflective metal layer 103 in the pixel area is the reflective area R, and the remaining area is the transmissive area T. The organic insulating layer 102 overlaps with the reflective region R, and is used to adjust the thickness of the liquid crystal cell in the reflective region and the degree of diffuse reflection of the reflective surface. Due to the physical characteristics of the organic film, the organic film insulating layer 102 cannot form an edge with a vertical boundary during fabrication, but forms an edge with a certain inclination. For details, refer to the organic film insulating layer 102 shown in FIG. 1 Bevelled edges 1021 . Since the thickness of the liquid crystal cell in the area of the inclined edge 1021 changes greatly in a short distance, it is difficult to make the optical path difference of the reflected light or transmitted light in this area consistent with other areas, so this area is not suitable for forming a transmission area or a reflection area. The surface of the inclined edge 1021 is also covered by the reflective metal layer 103 to block the backlight light transmitted by the backlight through the inclined edge 1021 .

The upper substrate 20 includes: a second glass substrate 201 and a first black matrix 202 arranged in sequence towards the direction of the liquid crystal layer 30, wherein the first black matrix 202 is arranged on the upper substrate 20 to be in phase with the inclined edge 1021 of the organic film insulating layer 102 The corresponding area is used to block the light reflected by the reflective metal layer 103 on the inclined edge 1021 .

However, the above-mentioned transflective liquid crystal display has the following technical problems: the backlight light transmitted by the inclined edge of the organic film insulating layer is blocked by the reflective metal layer, and the incident light reflected by the reflective metal layer is blocked by the first black matrix, making the inclined edge The area can neither be used as a reflective area nor a transmissive area, that is, it cannot be used to display graphic images, so the inclined edge area will occupy the aperture ratio of normal pixels, reduce the passing efficiency of backlight, and affect the display effect.

Contents of the invention

In order to solve the above technical problems, the purpose of the present invention is to provide a transflective liquid crystal display, so as to improve the backlight passing efficiency of the transflective liquid crystal display and optimize its display effect.

To achieve the above object, the present invention provides the following technical solutions:

A transflective liquid crystal display, comprising: an oppositely arranged lower substrate, an upper substrate, and a liquid crystal layer located therebetween; an organic film insulating layer is arranged on the side of the lower substrate facing the liquid crystal layer, and the organic film is insulating The first reflective metal layer is arranged on the organic film insulating layer except the inclined edge; the second reflective metal layer is arranged on the side of the upper substrate facing the liquid crystal layer, and the second reflective metal layer is arranged In the area of the upper substrate corresponding to the sloped edge.

Optionally, the lower substrate further includes a first thin film transistor and a second thin film transistor located on the side of the lower substrate facing the liquid crystal layer; the first thin film transistor is used to control the pixel electrode potential of the reflective region corresponding to the first reflective metal layer, The second thin film transistor is used to control the potential of the pixel electrode in the transmission area.

Optionally, the first thin film transistor has a double-gate structure.

Optionally, in the reflective mode, the pixel electrodes in the reflective region adopt a low-frequency driving method.

Optionally, the organic film insulating layer overlaps with the reflective area of the transflective liquid crystal display.

Optionally, the upper substrate further includes a first black matrix located on a side of the upper substrate facing the liquid crystal layer, and the first black matrix is located between the upper substrate and the second reflective metal layer.

Optionally, the upper substrate further includes a color filter layer composed of red, green, and blue color filters and a second black layer between the red, green, and blue color filters on the side of the upper substrate facing the liquid crystal layer. matrix.

Optionally, it is characterized in that: the upper substrate further includes a first polarizer disposed on a side facing away from the liquid crystal layer; the lower substrate further includes a second polarizer disposed on a side facing away from the liquid crystal layer.

Optionally, it is characterized in that: the upper substrate further includes a first liquid crystal alignment layer disposed on a side facing the liquid crystal layer; the lower substrate further includes a second liquid crystal alignment layer disposed on a side facing the liquid crystal layer.

Applying the technical solutions provided by the embodiments of the present invention, in the provided transflective liquid crystal display, the reflective metal layer on the inclined edge surface of the organic film insulating layer is canceled, and on the upper substrate area opposite to the inclined edge The second reflective metal layer is set, so that the backlight light can be transmitted through the inclined edge area, and reflected by the second reflective metal layer to the first reflective metal layer on the organic film insulating layer, and then the backlight is reflected by the first reflective metal layer Light bounces off the reflective area. This solution can make the backlight light within the inclined edge range of the organic film insulating layer in the transflective liquid crystal display be emitted from the reflection area, so it has a higher aperture ratio, can improve the passing efficiency of the backlight, and improve its display effect.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. Those skilled in the art can also obtain other drawings based on these drawings without creative work.

Fig. 1 is a kind of structural representation of existing transflective liquid crystal display;

2 is a schematic structural view of a transflective liquid crystal display in Embodiment 1 of the present invention;

3 is a schematic diagram of the structure and layout of thin film transistors and pixels in Embodiment 2 of the present invention;

4 is a schematic diagram of the structure and working principle of the transflective liquid crystal display in Embodiment 2 of the present invention;

5 is a schematic diagram of the voltage-current relationship of the double-gate thin film transistor and the single-gate thin film transistor in the second embodiment of the present invention;

FIG. 6 is a schematic layout diagram of a color filter layer and a black matrix in Embodiment 3 of the present invention;

7 is a schematic structural diagram of a transflective liquid crystal display in Embodiment 3 of the present invention;

FIG. 8 is a schematic structural diagram of a transflective liquid crystal display in Embodiment 4 of the present invention.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

Embodiment one:

As shown in Figure 2, it is a schematic structural diagram of a transflective liquid crystal display provided in this embodiment, and the liquid crystal display specifically includes:

The lower substrate 10, the upper substrate 20 and the liquid crystal layer 30 located therebetween;

The lower substrate 10 at least includes a first substrate 101, an organic film insulating layer 102 located on the side of the first substrate facing the liquid crystal layer 30, and a first reflective metal layer 1031 located on the organic film insulating layer 102; the organic film insulating layer 102 has a beveled edge 1021;

Wherein, the corresponding area of the first reflective metal layer 1031 is the reflective area R, and the remaining area is the transmissive area T. The first reflective metal layer 1031 is used to reflect the incident natural light from the outside to the liquid crystal display, so as to ensure the contrast of the liquid crystal display and improve its visibility.

The organic insulating layer 102 overlaps with the reflective region R, and is used to adjust the thickness of the liquid crystal cell in the reflective region R and the degree of diffuse reflection of the reflective surface. Due to the physical characteristics of the organic film, the organic film insulating layer 102 cannot form an edge with a vertical boundary during fabrication, but forms an edge with a certain inclination. For details, refer to the organic film insulating layer 102 shown in FIG. 2 Bevelled edges 1021 .

The upper substrate 20 at least includes a second substrate 201 and a first black matrix 202 located on the side of the second substrate 201 facing the liquid crystal layer 30; the corresponding area.

A second reflective metal layer 203 is disposed on the side of the first black matrix 202 facing the liquid crystal layer 30 ; the second reflective metal layer 203 is disposed on a region of the upper substrate 20 corresponding to the inclined edge 1021 .

The first reflective metal layer 1031 is disposed on the organic film insulating layer 102 except the inclined edge 1021 , and the surface of the inclined edge 1021 is not covered by the first reflective metal layer 1031 .

In the transmissive mode of the transflective liquid crystal display provided by this embodiment, the long axis direction of the liquid crystal molecules in the control reflective region R is perpendicular to the upper and lower substrates and parallel to the light propagation direction, and the long axis direction of the liquid crystal molecules in the transmissive region T is controlled. The axial direction is parallel to the upper and lower substrates and perpendicular to the direction of light propagation, that is, the reflective region R is controlled to be in a black state, and the transmissive region T is in a normal gray scale. At this time, the light emitted from the normal transmissive region T passes through the optical path difference of π. . Since the surface of the inclined edge 1021 has a certain inclined angle, the backlight transmitted within the range of the inclined edge 1021 will be refracted to a certain extent on its surface to form a transmitted light with a certain inclined angle. After the transmitted light passes through the optical path difference of π When reaching the second reflective metal layer 203, since the transmitted light has a certain inclination angle, the transmitted light will be reflected by the second reflective metal layer 203 onto the surface of the first reflective metal layer 1031, and pass through the surface of the first reflective metal layer 1031. After the second reflection, it exits from the reflection area R. In the process from the second reflective metal layer 203 to the exit from the reflective region R, because the optical path is located in the reflective region R, the long axis direction of the liquid crystal molecules in the reflective region R is parallel to the propagation direction of the light as mentioned above, so the reflective region R The liquid crystal layer 30 does not exhibit optical anisotropy in the direction of light propagation. At this time, the light passing through the reflective region R is not affected by the birefringence of the liquid crystal molecules, and its optical path difference remains unchanged. The light emitted from the reflective region R and The optical path difference of the light emitted from the transmissive region T is the same as π, so the gray scales displayed by the reflective region R and the transmissive region T are the same.

In the reflective mode of the transflective liquid crystal display provided in this embodiment, the long axis direction of the liquid crystal molecules in the control transmissive region T is perpendicular to the upper and lower substrates and parallel to the light propagation direction, and the long axis direction of the liquid crystal molecules in the reflective region R is controlled. The axial direction is parallel to the upper and lower substrates and perpendicular to the direction of light propagation, that is, the control transmission area T is in a black state, and the reflection area R is in a normal gray scale. At this time, the low-frequency driving method can be used to control the pixel electrodes in the reflective area to display static images, which is suitable for standby occasions and can achieve low-power applications.

In the transflective liquid crystal display provided by the embodiment of the present invention, the reflective metal layer is not provided on the inclined edge surface of the organic film insulating layer, and the position corresponding to the inclined edge of the lower substrate on the side of the black matrix facing the liquid crystal layer The second reflective metal layer is provided, so that the backlight light in the range of the inclined edge can be emitted from the reflective area, thereby improving the passing efficiency of the backlight and improving its display effect.

Embodiment two:

In order to realize the separate control of the electrode potentials in the reflective area and the transmissive area of the transflective liquid crystal display, as shown in the partial structure diagram of the liquid crystal display provided in Figure 3, the reflective area is R, the transmissive area is T, and the first black matrix 202. The lower substrate described in Embodiment 1 may further include: a first thin film transistor 401 (TFT, Thin Film Transistor) and a second thin film transistor 402 located on the side of the first substrate facing the liquid crystal layer.

The first thin film transistor 401 is used to control the potential of the pixel electrode in the reflective region R, and the second thin film transistor 402 is used to control the potential of the pixel electrode in the transmissive region T.

In the pixel of the transflective liquid crystal display provided in this embodiment, the first gate line 501 and the first data line 601 connected to the first thin film transistor 401 are used to control the reflective pixel electrode potential of the reflective region R, the liquid crystal display In the transmission mode, by controlling the electrode potential of the reflective pixel, the long axis direction of the liquid crystal molecules in the reflective region R can be controlled to be parallel to the direction of the electric field, that is, perpendicular to the light propagation direction, so that the reflective region R is in a black state. Use the second gate line 502 and the second data line 602 connected to the second thin film transistor 402 to control the potential of the transmissive pixel electrode in the transmissive region T. When the liquid crystal display is in the transmissive mode, by controlling the potential of the transmissive pixel electrode, it can control The long axis direction of the liquid crystal molecules in the transmissive region T is perpendicular to the direction of the electric field, that is, perpendicular to the light propagation direction, so that the transmissive region exhibits a normal gray scale.

When the liquid crystal display is in the transmission mode, refer to the schematic diagram of the working principle of the liquid crystal display shown in Figure 4, and refer to Figure 3 at the same time, the second thin film crystal 402 in the transmission area T controls the transmission pixel electrode to display normal gray scale, and the reflection area T The first thin film transistor 401 of R controls the reflective pixel electrode to display a black state. At this time, the liquid crystal layer in the reflective region R does not show optical anisotropy in the direction of light propagation, so that the light passing through the reflective region R is not affected by the liquid crystal molecules. Due to the influence of refraction, the optical path difference remains unchanged, thereby ensuring that the optical path difference of the light emitted from the reflective region R and the light emitted from the transmissive region T is consistent, so that the gray scales displayed by the reflective region R and the transmissive region T are the same.

In addition, in order to reduce the power consumption of the transflective liquid crystal display, in this embodiment, the first thin film transistor 401 in the reflective region may specifically have a double gate structure. In the reflective mode, the reflective region R pixel electrode adopts a low-frequency drive mode, which can display a static picture and is suitable for the standby state of the liquid crystal display. At this time, the first thin film transistor 401 with a double-gate structure can effectively reduce the voltage during the potential holding period. leakage current.

As shown in Figure 5, the schematic diagram of the voltage-current relationship between the double-gate thin film transistor and the single-gate thin film transistor, it can be known that the leakage current of the double-gate thin film transistor used in the reflective region in this embodiment has dropped by more than Two orders of magnitude, the on-off ratio drops by more than one order of magnitude.

Embodiment three:

In the transflective liquid crystal display provided by the embodiment of the present invention, white light can also be converted into red, green, and blue primary color light beams by setting a color filter layer, and other components such as a liquid crystal layer and a polarizer can be used to display different color images. Effect.

Therefore, the difference between this embodiment and Embodiment 1 is that in the transflective liquid crystal display provided by this embodiment, the upper substrate may also include red, A color filter layer composed of green and blue color filters and a second black matrix between the red, green and blue color filters. The second black matrix is used to isolate the red, green and blue color filters from each other.

Referring to Figure 6, it is a schematic diagram of the layout structure of the color filter layer, the first black matrix and the second black matrix, wherein, R is a reflective area, T is a transmissive area, and 2041, 2042, and 2043 are red, green, and blue filters respectively. The color filter, the reflective region R and the transmissive region T are isolated from each other by the first black matrix 202 , and the adjacent color filters indicated by 2041 , 2042 and 2043 are isolated from each other by the second black matrix 202 ′.

In addition, referring to FIG. 7 , the upper substrate 20 may further include a planarization coating 205 and a common transparent electrode layer (not shown in the figure) on the side of the color filter layer 204 facing the liquid crystal layer 30 . Wherein, the planarization coating 205 covers the surfaces of the color filter layer 204 and the second black matrix 202 for planarizing the surface of the upper substrate 20 and protecting the color filter layer 204 . A common transparent electrode layer covers the surface of the planarization coating 205 , and the common transparent electrode layer includes but not limited to a transparent conductive oxide material, such as indium tin oxide (ITO). A first liquid crystal alignment layer (not shown in the figure) may also be provided on the side of the common transparent electrode layer facing the liquid crystal layer 30, and the side of the liquid crystal alignment layer facing the liquid crystal layer 30 forms grooves with consistent alignment directions by rubbing. The grooves make the arrangement of the liquid crystal molecules near the liquid crystal alignment layer tend to be consistent, and the material of the liquid crystal alignment layer includes but not limited to polyimide.

In the transflective liquid crystal display provided by the embodiment of the present invention, the lower substrate 10 may further include: gate lines and data lines located on the side of the first substrate 101 facing the liquid crystal layer 30, the gate lines and the data lines are perpendicular to each other. Intersect to define the pixel area. A plurality of gate lines and a plurality of data lines (as shown in FIG. 3 ) are formed on the first substrate 101 facing the liquid crystal layer 30 , wherein the plurality of gate lines are parallel to each other and separated from each other at fixed intervals, and along the The first direction extends, and a plurality of data lines are also parallel to each other and separated from each other at fixed intervals, and extend along the second direction substantially perpendicular to the first direction; therefore, the first substrate 101 passes through the gate Intersections of lines and data lines define a plurality of pixel regions, a plurality of pixel electrodes in each pixel region, and the pixel electrodes are connected to thin film transistors (TFT); The signal from the corresponding data line is sent to each corresponding pixel electrode, thereby controlling the steering of the liquid crystal molecules.

As shown in FIG. 7, in this embodiment, a first silicon nitride insulating layer (not shown) may also be provided on the side of the gate line (not shown) facing the liquid crystal layer 30, the first nitrogen An amorphous silicon pattern (not shown in the figure) may also be provided on the side of the silicon nitride insulating layer facing the liquid crystal layer, and the first silicon nitride insulating layer and the amorphous silicon pattern are located on the gate line and the data line (not shown in the figure). not shown). A second silicon nitride insulating layer 104 may also be disposed on the side of the data lines facing the liquid crystal layer 30 , and the organic film insulating layer 102 is disposed on the side of the second silicon nitride insulating layer 104 facing the liquid crystal layer 30 . Meanwhile, an ITO electrode layer (not shown in the figure) may also be disposed between the second silicon nitride insulating layer and the first reflective metal layer 103 . The side of the lower substrate 10 facing the liquid crystal layer 30 can also be provided with a second liquid crystal alignment layer (not shown in the figure), and the side of the liquid crystal alignment layer facing the liquid crystal layer forms grooves with the same alignment direction by rubbing, so that the The alignment of the liquid crystal molecules near the liquid crystal alignment layer tends to be consistent, and the material of the liquid crystal alignment layer includes but not limited to polyimide (Polyamide). The direction of the grooves in the first liquid crystal molecule alignment layer is perpendicular to the direction of the grooves in the second liquid crystal molecule alignment layer.

In addition, the upper substrate 20 may further include a first polarizer disposed on a side facing away from the liquid crystal layer 30 ; the lower substrate 10 may further include a second polarizer disposed on a side facing away from the liquid crystal layer 30 . The polarizer has a fixed polarization axis, which only allows the light whose vibration direction is consistent with the polarization direction to pass through, and absorbs the light whose vibration direction is perpendicular to the polarization axis, and is used to convert non-polarized natural light into polarized light. The light in the vertical direction passes through, so that the LCD can display images normally.

Embodiment four:

As shown in FIG. 8 , it is a schematic diagram of another structure of a transflective liquid crystal display provided by an embodiment of the present invention. The transflective liquid crystal display specifically includes:

The lower substrate 10, the upper substrate 20 and the liquid crystal layer 30 located therebetween;

The lower substrate 10 at least includes a first substrate 101, an organic film insulating layer 102 located on the side of the first substrate 101 facing the liquid crystal layer 30, and a first reflective metal layer 1031 located on the organic film insulating layer 102; Layer 102 has beveled edges 1021;

The organic film insulating layer 102 has an inclined edge 1021, and the surface of the inclined edge 1021 is not covered by the first reflective metal layer 1031;

The upper substrate 20 includes at least a second substrate 201 and a second reflective metal layer 202 located on the side of the second substrate facing the liquid crystal layer. the corresponding area.

In the transflective liquid crystal display provided in this embodiment, since the second reflective metal layer 202 can only reflect light and cannot transmit light, the light-shielding effect of the original first black matrix can be realized. In the provided transflective liquid crystal display, in this embodiment, there is no need to set the first black matrix, which can simplify the structure of the liquid crystal display, reduce the manufacturing process, and reduce the production cost. This embodiment can be referred to with the solutions provided by Embodiment 2 and Embodiment 3, and the similarities will not be repeated here.

Applying the technical solutions provided by the embodiments of the present invention, in the provided transflective liquid crystal display, the reflective metal layer on the inclined edge surface of the organic film insulating layer is canceled, and the reflective metal layer is arranged on the substrate area opposite to the inclined edge A second reflective metal layer is provided, so that the backlight light can be transmitted through the inclined edge region, and reflected by the second reflective metal layer to the first reflective metal layer on the organic film insulating layer, and then the backlight light is transmitted by the first reflective metal layer Reflects off the reflective area. The solution can make the backlight light within the inclined edge range of the organic film insulating layer in the transflective liquid crystal display be emitted from the reflection area, thereby improving the passing efficiency of the backlight and improving its display effect. In addition, the pixel electrode in the reflective area in the reflective mode of the present invention adopts a low-frequency driving method, which can display static pictures, and is suitable for standby occasions. At this time, the aforementioned double-gate TFT structure can effectively reduce the leakage current during the potential holding period and reduce the power consumption of the liquid crystal display device.

Each embodiment in this specification is described in a progressive manner, each embodiment focuses on the difference from other embodiments, and the same and similar parts of each embodiment can be referred to each other. The above description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the present invention will not be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (9)

1. a semi-transmission semi-reflection LCD is characterized in that, comprising:

The infrabasal plate that is oppositely arranged, upper substrate and therebetween liquid crystal layer;

Be positioned at said infrabasal plate and simultaneously go up the organic membrane insulation course that is provided with towards liquid crystal layer, said organic membrane insulation course has sloping edge, removes sloping edge on the said organic membrane insulation course and is provided with first reflective metal layer;

Be positioned at said upper substrate and simultaneously go up second reflective metal layer that has that is provided with towards liquid crystal layer, said second reflective metal layer is arranged on upper substrate and the corresponding zone of said sloping edge.

2. semi-transmission semi-reflection LCD according to claim 1 is characterized in that:

Said infrabasal plate also comprises and is positioned at the first film transistor and second thin film transistor (TFT) of infrabasal plate on liquid crystal layer one side;

The first film transistor is in order to control the pixel electrode current potential of the corresponding reflector space of first reflective metal layer, and second thin film transistor (TFT) is used to control the pixel electrode current potential of regional transmission.

3. semi-transmission semi-reflection LCD according to claim 2 is characterized in that:

Said the first film transistor is a double-gate structure.

4. semi-transmission semi-reflection LCD according to claim 1 is characterized in that:

The pixel electrode of reflector space adopts the low frequency type of drive under reflective-mode.

5. semi-transmission semi-reflection LCD according to claim 1 is characterized in that:

Said organic membrane insulation course overlaps with the reflector space of semi-transmission semi-reflection LCD.

6. semi-transmission semi-reflection LCD according to claim 1 is characterized in that:

Said upper substrate comprises also and is positioned at the first black matrix of upper substrate on the one side of liquid crystal layer that the said first black matrix is between the upper substrate and second reflective metal layer.

7. semi-transmission semi-reflection LCD according to claim 1 is characterized in that:

Said upper substrate also comprises at upper substrate towards colour filter on the one side of liquid crystal layer, that be made up of the red, green, blue color filter and second black matrix" between the red, green, blue color filter.

8. semi-transmission semi-reflection LCD according to claim 1 is characterized in that:

Said upper substrate comprises that also liquid crystal layer is simultaneously gone up first polaroid that is provided with dorsad;

Said infrabasal plate comprises that also liquid crystal layer is simultaneously gone up second polaroid that is provided with dorsad.

9. semi-transmission semi-reflection LCD according to claim 1 is characterized in that:

Said upper substrate also comprises towards liquid crystal layer simultaneously goes up first liquid crystal aligning layer that is provided with;

Said infrabasal plate also comprises towards liquid crystal layer simultaneously goes up second liquid crystal aligning layer that is provided with.

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