CN205318059U - Display panel and display device - Google Patents

Abstract

The utility model discloses a display panel and display device to display panel's structure only enables few partial light transmission, the lower problem of smooth utilization ratio that leads to among the solution prior art. Display panel, including first base plate, first base plate includes a plurality of pixel, pixel is including corresponding first sub -pixel different monochromatic light, side by side, second sub -pixel and third sub -pixel respectively, the second base plate, the second base plate with first base plate sets up relatively, the spectro -film, the spectro -film set up in array substrate dorsad opposite direction substrate's one side, the spectro -film be used for with incident the decomposition of white light for respectively with first sub -pixel the second sub -pixel with the monochromatic light that the third sub -pixel corresponds to projecting of one -to -one first sub -pixel the second sub -pixel with on the third sub -pixel.

Description

A kind of display panel and display unit

Technical field

The utility model relates to technique of display field, particularly relates to a kind of display panel and display unit.

Background technology

Thin-film transistor LCD device (ThinFilmTransistor-LiquidCrystalDisplay, TFT-LCD) have that Low emissivity, volume be little and the advantage such as low power consuming, traditional CRT display (CathodeRayTubedisplay is replaced gradually in certain applications, CRT), thus it is widely used on the electronic products such as notebook computer, personal digital assistant (PersonalDigitalAssistant, PDA), flat-surface television or mobile telephone.

Traditional TFT-LCD comprises display panel and backlight, the liquid crystal that described display panel comprises subtend substrate, array substrate and is arranged between subtend substrate and array substrate; Subtend substrate or array substrate arrange color blocking (ColorFilter, CF). Color blocking is formed from a resin usually, comprise red color resistance, green color blocking and blue color blocking, the white light sent by backlight filters, only consistent with the color corresponding to each color blocking in white light light can just enough pass through, and the light that in white light, color corresponding to itself and each color blocking is inconsistent is then absorbed. Such as: red color resistance makes the ruddiness in white backlight pass through, green color blocking makes the green glow in white backlight pass through, and blue color blocking makes the blue light in white backlight pass through. Visible, for the white light that backlight sends, existing display panel only can make small part light pass through, and causes light utilization efficiency lower.

Practical novel content

The purpose of this utility model is to provide a kind of display panel and display unit, small part light only can be made to pass through to solve the structure of the display panel of prior art, the problem that the light utilization efficiency caused is lower.

The purpose of this utility model is achieved through the following technical solutions:

The utility model embodiment provides a kind of display panel, comprising:

First substrate, comprises some pixel cells, described pixel cell comprise respectively corresponding different monochromatic ray, the first sub-pixel side by side, the 2nd sub-pixel and the 3rd sub-pixel;

Second substrate, described second substrate and described first substrate are oppositely arranged;

Spectro-film, described spectro-film is arranged at the described first substrate back of the body to the one side of described second substrate, described spectro-film is used for the white light of incidence is decomposed into monochromatic ray corresponding with described first sub-pixel, described 2nd sub-pixel and described 3rd sub-pixel respectively, and projects one to one on described first sub-pixel, described 2nd sub-pixel and described 3rd sub-pixel.

In the present embodiment, by described spectro-film, the white light of incidence is decomposed, obtains the monochromatic ray corresponding with each sub-pixel, and by decompose the monochromatic ray that obtains corresponding be provided to sub-pixel, thus the white light reducing backlight and providing is filtered the loss caused, it is to increase light utilization efficiency.

Preferably, described display panel also comprises wire grid polarizer, and described wire grid polarizer is arranged between described spectro-film and described first substrate. In the present embodiment, the monochromatic ray after utilizing described wire grid polarizer that described spectro-film is decomposed is more accurate when projecting on corresponding sub-pixel.

Preferably, described spectro-film comprises some light splitting microstructures, and described light splitting microstructure is sinusoidal grating.

Preferably, described light splitting microstructure is uniformly distributed at described spectro-film.

Preferably, the placement angle of described light splitting microstructure on described spectro-film meets following formula group:

${\mathrm{\α}}_q=\mathrm{\α}+q\frac{\mathrm{\λ}}{\mathrm{\Λ}}{\mathrm{cos\θ}}_G;$

${\mathrm{\β}}_q=\mathrm{\β}+q\frac{\mathrm{\λ}}{\mathrm{\Λ}}{\mathrm{sin\θ}}_G;$

${\mathrm{\γ}}_q={(1-{\mathrm{\α}}_q^2-{\mathrm{\β}}_q^2)}^{1/2};$

Wherein, λ is the wavelength of the incident light of described spectro-film, and Λ is the cycle of the sinusoidal curve of described sinusoidal grating, and α is the incident light of described spectro-film and the angle of X-axis, and β is the incident light of described spectro-film and the angle of Y-axis, α_qFor the emergent light of described spectro-film and the angle of X-axis, β_qFor the emergent light of described spectro-film and the angle of Y-axis, γ_qFor the emergent light of described spectro-film and the angle of Z axle, θ_GFor the angle of the placement angle of described light splitting microstructure on described spectro-film and X-axis, q is the level time of described light splitting microstructure.

Preferably, described light splitting microstructure is directly proportional to the width of described pixel cell apart from the corresponding distance of described pixel cell, and described spectro-film is directly proportional to the tangent value of spectro-film described in this He the angle of self emergent light apart from the distance of described pixel cell.

Preferably, described light splitting microstructure meets following formula apart from the distance of corresponding described pixel cell:

H=l*tane

Wherein, h is the distance of described light splitting microstructure apart from the described pixel cell apart from correspondence, and l is the width of two sub-pixels in described pixel cell, and e is the emergent light of described spectro-film and the angle of described spectro-film place plane.

Preferably, described display panel also comprises liquid crystal, the vertically disposed upper polaroid of optical axis and lower polaroid;

Described liquid crystal is arranged between described first substrate and described second substrate;

Described upper polaroid is arranged at the described second substrate back of the body to the one side of described first substrate, described lower polaroid be arranged at the described spectro-film back of the body to described first substrate one side; Or, described upper polaroid is arranged at the described second substrate back of the body to the one side of described first substrate, and described lower polaroid is arranged between described spectro-film and described wire grid polarizer.

Preferably, described first substrate and described second substrate all do not arrange color blocking. In the present embodiment, the monochromatic ray that described spectro-film obtains after decomposing the white light of backlight offer need not through color blocking, it is to increase light transmission rate.

The useful effect of the utility model embodiment is as follows: display panel utilizes described spectro-film to be decomposed by the white light of incidence, obtain the monochromatic ray corresponding with each sub-pixel, and by decompose the monochromatic ray that obtains corresponding be provided to sub-pixel, thus the white light reducing backlight and providing is filtered the loss caused, it is to increase light utilization efficiency.

The utility model embodiment also provides a kind of display unit, comprises the described display panel that as above embodiment provides.

The useful effect of the utility model embodiment is as follows: display panel utilizes described spectro-film to be decomposed by the white light of incidence, obtain the monochromatic ray corresponding with each sub-pixel, and by decompose the monochromatic ray that obtains corresponding be provided to sub-pixel, thus the white light reducing backlight and providing is filtered the loss caused, it is to increase light utilization efficiency.

Accompanying drawing explanation

The structural representation of the display panel that Fig. 1 provides for the utility model embodiment;

The structural representation of the display panel with wire grid polarizer that Fig. 2 provides for the utility model embodiment;

When in the spectro-film that Fig. 3 provides for the utility model embodiment, light splitting microstructure is sinusoidal grating, the schematic diagram of the sinusoidal curve that sinusoidal grating is corresponding;

The schematic diagram of the placement angle of the light splitting microstructure that Fig. 4 provides for the utility model embodiment on spectro-film;

The schematic diagram of the distance of the pixel cell of the light splitting microstructure distance distance correspondence that Fig. 5 provides for the utility model embodiment;

The structural representation of the first display panel with upper and lower polaroid that Fig. 6 provides for the utility model embodiment;

The structural representation of the 2nd kind of display panel with upper and lower polaroid that Fig. 7 provides for the utility model embodiment;

The structural representation of the display unit that Fig. 8 provides for the utility model embodiment.

Embodiment

Below in conjunction with Figure of description, the process that realizes of the utility model embodiment is described in detail. It is noted that same or similar label represents same or similar element or has element that is identical or similar functions from start to finish. It is exemplary below by the embodiment being described with reference to the drawings, only for explaining the utility model, and can not be interpreted as restriction of the present utility model.

See Fig. 1, the utility model embodiment provides a kind of display panel, comprising:

First substrate 1, comprises some pixel cells, pixel cell comprise respectively corresponding different monochromatic ray, the first sub-pixel 11 side by side, the 2nd sub-pixel 12 and the 3rd sub-pixel 13;

Second substrate 2, second substrate 2 and first substrate 1 are oppositely arranged;

Spectro-film 3, spectro-film 3 is arranged at first substrate 1 and carries on the back the one side to second substrate 2, spectro-film 3 for being decomposed into monochromatic ray corresponding with the first sub-pixel 11, the 2nd sub-pixel 12 and the 3rd sub-pixel 13 respectively by the white light 20 of incidence, and projects one to one on the first sub-pixel 11, the 2nd sub-pixel 12 and the 3rd sub-pixel 13.

This first sub-pixel 11, the 2nd sub-pixel 12 and the 3rd sub-pixel 13 can be red sub-pixel, green sub-pixels and blue subpixels, or are the sub-pixel of other color that can realize display, do not repeat them here.

In the present embodiment, by spectro-film 3, the white light 20 of incidence is decomposed, obtain the monochromatic ray corresponding with each sub-pixel (such as the first sub-pixel 11, the 2nd sub-pixel 12 and the 3rd sub-pixel 13), and by decompose the monochromatic ray that obtains corresponding be provided to sub-pixel, this also just means that white light is utilized fully, avoid in prior art that in white light 20, the light of incongruent color is filtered with sub-pixel, thus the white light 20 reducing backlight and providing is filtered the loss caused, it is to increase light utilization efficiency.

Simultaneously, the monochromatic ray obtained in order to the white light 20 enabling spectro-film 3 decompose incidence projects on corresponding sub-pixel more accurately, parts light path finely tuned or correct can be set in the incident side of display panel, such as: as shown in Figure 2, display panel also comprises wire grid polarizer 4, and wire grid polarizer 4 is arranged between spectro-film 3 and first substrate 1.In the present embodiment, the monochromatic ray that the white light 20 utilizing wire grid polarizer 4 to enable spectro-film 3 decompose incidence obtains projects on corresponding sub-pixel more accurately, such as: the first monochromatic ray that the white light 20 making spectro-film 3 decompose incidence obtains projects the first sub-pixel 11 accurately, the 2nd kind of monochromatic ray that the white light 20 making spectro-film 3 decompose incidence obtains projects the 2nd sub-pixel 12 accurately, and the third monochromatic ray that the white light 20 making spectro-film 3 decompose incidence obtains projects the 3rd sub-pixel 13 accurately. It should be noted that, under normal circumstances, this first sub-pixel 11, the 2nd sub-pixel 12 and the 3rd sub-pixel 13 can distinguish the one in corresponding red sub-pixel, green sub-pixels and blue subpixels, spectro-film 3 decomposes the first monochromatic ray, the 2nd kind of monochromatic ray and the third monochromatic ray that incident white light 20 obtains can be respectively ruddiness, green glow and Lan Guang, certain sub-pixel can also be the sub-pixel of other monochromatic ray corresponding, monochromatic ray can also be other monochromatic ray outside ruddiness, green glow and Lan Guang, does not repeat them here.

In order to more clearly understand spectro-film 3, composition graphs 3 to Fig. 7 is described in detail as follows:

As shown in Figure 3, spectro-film 3 comprises some light splitting microstructures, and light splitting microstructure is sinusoidal grating. The cycle of the sinusoidal curve of this sine grating is Λ, its normal p and sinusoidal grating place plane orthogonal. In order to make spectro-film 3 can provide uniform backlight (certainly, backlight is each monochromatic ray obtained after being decomposed by white light 20) herein, the light splitting microstructure of spectro-film 3 is uniformly distributed on spectro-film 3.

As shown in Figure 4, the placement angle of light splitting microstructure on spectro-film 3 meets such as formula 1～3:

${\mathrm{\α}}_q=\mathrm{\α}+q\frac{\mathrm{\λ}}{\mathrm{\Λ}}{\mathrm{cos\θ}}_G---\left(1\right)$

${\mathrm{\β}}_q=\mathrm{\β}+q\frac{\mathrm{\λ}}{\mathrm{\Λ}}{\mathrm{sin\θ}}_G---\left(2\right)$

${\mathrm{\γ}}_q={(1-{\mathrm{\α}}_q^2-{\mathrm{\β}}_q^2)}^{1/2}---\left(3\right)$

Wherein, λ is the wavelength of the incident light (namely incident white light 20) of spectro-film 3, and Λ is the cycle of the sinusoidal curve of sinusoidal grating, and α is the incident light of spectro-film 3 and the angle of X-axis, and β is the incident light of spectro-film 3 and the angle of Y-axis, α_qFor the emergent light of spectro-film 3 and the angle of X-axis, β_qFor the emergent light of spectro-film 3 and the angle of Y-axis, γ_qFor the emergent light of spectro-film 3 and the angle of Z axle, θ_GFor the angle of the placement angle of light splitting microstructure on spectro-film 3 and X-axis, q is the level time of light splitting microstructure.

Preferably, light splitting microstructure is directly proportional to the width of pixel cell apart from the corresponding distance of pixel cell, and spectro-film 3 is directly proportional to the tangent value of this spectro-film 3 and the angle of self emergent light apart from the distance of pixel cell. It should be noted that, light splitting microstructure is apart from the distance of corresponding pixel cell, it is possible to understand that for spectro-film 3 is apart from the distance of first substrate 1 towards the one side of second substrate 2.

See Fig. 5, light splitting microstructure meets formula 4 apart from the distance apart from corresponding pixel cell:

H=l*tane (4)

Wherein, h is the distance of light splitting microstructure apart from the pixel cell apart from correspondence, and l is the width of two sub-pixels in pixel cell, and e is the emergent light of spectro-film 3 and the angle of spectro-film 3 place plane.

Preferably, display panel also comprises liquid crystal 5, the vertically disposed upper polaroid 6 of optical axis and lower polaroid 7; Liquid crystal 5 is arranged between first substrate 1 and second substrate 2; Upper polaroid 6 is arranged at second substrate 2 and carries on the back the one side to first substrate 1, lower polaroid 7 be arranged at spectro-film 3 carry on the back to first substrate 1 one side, as shown in Figure 6; Or, upper polaroid 6 is arranged at second substrate 2 and carries on the back the one side to first substrate 1, and lower polaroid 7 is arranged between spectro-film 3 and wire grid polarizer 4, as shown in Figure 7.

It should be noted that, first substrate 1 can be array substrate, and second substrate 2 can be subtend substrate, and first substrate 1 and second substrate 2 can arrange color film can not also arrange color film. In order to obtain higher light transmission rate, it is preferable that, first substrate 1 and second substrate 2 all do not arrange color blocking. In the present embodiment, the monochromatic ray that spectro-film 3 obtains after decomposing the white light of backlight offer need not through color blocking, it is to increase light transmission rate.

The useful effect of the utility model embodiment is as follows: display panel utilizes spectro-film to be decomposed by the white light of incidence, obtain the monochromatic ray corresponding with each sub-pixel, and by decompose the monochromatic ray that obtains corresponding be provided to sub-pixel, thus the white light reducing backlight and providing is filtered the loss caused, it is to increase light utilization efficiency.

As shown in Figure 8, the utility model embodiment also provides a kind of display unit, comprises backlight module 100, also comprises the display panel 200 that as above embodiment provides.

The useful effect of the utility model embodiment is as follows: display panel utilizes spectro-film to be decomposed by the white light of incidence, obtain the monochromatic ray corresponding with each sub-pixel, and by decompose the monochromatic ray that obtains corresponding be provided to sub-pixel, thus the white light reducing backlight and providing is filtered the loss caused, it is to increase light utilization efficiency.

Obviously, the utility model can be carried out various change and modification and not depart from spirit and scope of the present utility model by the technician of this area. Like this, if these amendments of the present utility model and modification belong within the scope of the utility model claim and equivalent technologies thereof, then the utility model also is intended to comprise these change and modification.

Claims (10)

1. a display panel, it is characterised in that, comprising:

First substrate, comprises some pixel cells, described pixel cell comprise respectively corresponding different monochromatic ray, the first sub-pixel side by side, the 2nd sub-pixel and the 3rd sub-pixel;

Second substrate, described second substrate and described first substrate are oppositely arranged;

Spectro-film, described spectro-film is arranged at the described first substrate back of the body to the one side of described second substrate, described spectro-film is used for the white light of incidence is decomposed into monochromatic ray corresponding with described first sub-pixel, described 2nd sub-pixel and described 3rd sub-pixel respectively, and projects one to one on described first sub-pixel, described 2nd sub-pixel and described 3rd sub-pixel.

2. display panel as claimed in claim 1, it is characterised in that, described display panel also comprises wire grid polarizer, and described wire grid polarizer is arranged between described spectro-film and described first substrate.

3. display panel as claimed in claim 1, it is characterised in that, described spectro-film comprises some light splitting microstructures, and described light splitting microstructure is sinusoidal grating.

4. display panel as claimed in claim 3, it is characterised in that, described light splitting microstructure is uniformly distributed at described spectro-film.

5. display panel as claimed in claim 3, it is characterised in that, the placement angle of described light splitting microstructure on described spectro-film meets following formula group:

${\mathrm{\α}}_q=\mathrm{\α}+q\frac{\mathrm{\λ}}{\mathrm{\Λ}}{\mathrm{cos\θ}}_G;$

${\mathrm{\β}}_q=\mathrm{\β}+q\frac{\mathrm{\λ}}{\mathrm{\Λ}}{\mathrm{sin\θ}}_G;$

${\mathrm{\γ}}_q={(1-{\mathrm{\α}}_q^2-{\mathrm{\β}}_q^2)}^{1/2};$

Wherein, λ is the wavelength of the incident light of described spectro-film, and Λ is the cycle of the sinusoidal curve of described sinusoidal grating, and α is the incident light of described spectro-film and the angle of X-axis, and β is the incident light of described spectro-film and the angle of Y-axis, α_qFor the emergent light of described spectro-film and the angle of X-axis, β_qFor the emergent light of described spectro-film and the angle of Y-axis, γ_qFor the emergent light of described spectro-film and the angle of Z axle, θ_GFor the angle of the placement angle of described light splitting microstructure on described spectro-film and X-axis, q is the level time of described light splitting microstructure.

6. display panel as claimed in claim 3, it is characterized in that, described light splitting microstructure is directly proportional to the width of described pixel cell apart from the corresponding distance of described pixel cell, and described spectro-film is directly proportional to the tangent value of spectro-film described in this He the angle of self emergent light apart from the distance of described pixel cell.

7. display panel as claimed in claim 6, it is characterised in that, described light splitting microstructure meets following formula apart from the distance apart from corresponding described pixel cell:

H=l*tane

Wherein, h is the distance of described light splitting microstructure apart from the described pixel cell apart from correspondence, and l is the width of two sub-pixels in described pixel cell, and e is the emergent light of described spectro-film and the angle of described spectro-film place plane.

8. display panel as claimed in claim 2, it is characterised in that, described display panel also comprises liquid crystal, the vertically disposed upper polaroid of optical axis and lower polaroid;

Described liquid crystal is arranged between described first substrate and described second substrate;

Described upper polaroid is arranged at the described second substrate back of the body to the one side of described first substrate, described lower polaroid be arranged at the described spectro-film back of the body to described first substrate one side; Or, described upper polaroid is arranged at the described second substrate back of the body to the one side of described first substrate, and described lower polaroid is arranged between described spectro-film and described wire grid polarizer.

9. display panel as claimed in claim 1, it is characterised in that, described first substrate and described second substrate all do not arrange color blocking.

10. a display unit, it is characterised in that, comprise the display panel as described in item as arbitrary in claim 1 to 9.