Description of drawings
For above-mentioned and other purposes of the present invention, feature, advantage and embodiment can be become apparent, being described in detail as follows of appended accompanying drawing:
Fig. 1 is the diagrammatic cross-section of known electric exciting light emitting display panel;
Fig. 2 is the decomposing schematic representation of the semi-penetration semi-reflection type display panel of the present invention's first preferred embodiment;
Fig. 3 is the diagrammatic cross-section of the semi-penetration semi-reflection type display panel of the present invention's first preferred embodiment;
Fig. 4 is the diagrammatic cross-section of another embodiment of the semi-penetration semi-reflection type display panel of first preferred embodiment;
Fig. 5 is the diagrammatic cross-section of the semi-penetration semi-reflection type display panel of the present invention's second preferred embodiment.
Wherein, Reference numeral
10 electric exciting light emitting display panels, 12 thin film transistor base plates
14 anodes, 16 organic luminous layers
18 negative electrodes, 20 transparency carriers
22 substrates, 24 thin film transistor (TFT)s
26 protective seams, 28 contact holes
100 semi-penetration semi-reflection type display panels, 102 pixel regions
102R echo area 102T penetrating region
104 first substrates, 106 second substrates
108 liquid crystal layers, 110 common lines
112 first on-off elements, 114 transparency electrodes
116 chromatic filter layers, 118 power leads
120 second switch elements, 122 driving elements
124 EL parts, 126 reflecting bodys
128 anodes, 130 luminescent layers
132 negative electrodes, 134 storage capacitors
136 projections, 138 alignment films
140 alignment films, 142 protrusions
144 quarter-wave plates, 146 polaroids
Embodiment
Please refer to Fig. 2 and Fig. 3, Fig. 2 is the decomposing schematic representation of the semi-penetration semi-reflection type display panel of the present invention's first preferred embodiment, and Fig. 3 is the diagrammatic cross-section of the semi-penetration semi-reflection type display panel of the present invention's first preferred embodiment.As Fig. 2 and shown in Figure 3, definition has a plurality of pixel regions 102 on the semi-penetration semi-reflection type display panel 100, and each pixel region 102 comprises echo area 102R and penetrating region 102T.The semi-penetration semi-reflection type display panel 100 of present embodiment comprises first substrate 104, second substrate 106 and liquid crystal layer 108, wherein second substrate 106 and the 104 subtend settings of first substrate, and liquid crystal layer 108 is arranged between first substrate 104 and second substrate 106.First substrate 104 is the various substrates that are used to make thin film transistor (TFT), for example: and silicon substrate, glass substrate or plastic substrate etc., and second substrate 106 is the various transparency carriers that are used to make thin film transistor (TFT), for example glass substrate or plastic substrate etc.
In the present embodiment, many gate lines G L
LCD, many data line DL
LCD, many common lines (Common Line) 110, a plurality of first on-off element 112, a plurality of transparency electrode 114 and a plurality of chromatic filter layer 116 be between second substrate 106 and liquid crystal layer 108.Gate lines G L
LCDWith data line DL
LCDBe arranged at second substrate 106 and regard to a side and the mutually orthogonal roughly of first substrate 104, and corresponding to the position, boundary in neighbor district 102.Common lines 110 be arranged at second substrate 106 regard to first substrate 104 a side and with gate lines G L
LCDRoughly parallel to each other, and be electrically connected to a shared voltage.Each first on-off element 112 is arranged at the side that each pixel region 102 second interior substrate 106 regards to first substrate 104, and the grid of first on-off element 112 and corresponding gate lines G L
LCDElectrically connect, and the source electrode of first on-off element 112 and corresponding data line DL
LCDElectrically connect.Each transparency electrode 114 is arranged in the penetrating region 102T respectively and extends on second substrate 106 of echo area 102R and electrically connect with the drain electrode of first on-off element 112 in the same pixel region 102.Each chromatic filter layer 116 is located at the side that second substrate 106 in the echo area 102R of each pixel region 102 regards to first substrate 104 respectively, and chromatic filter layer 116 comprises the first color filter layer, the second color filter layer and the 3rd color filter layer, wherein the first color filter layer can be Red lightscreening plate, the second color filter layer can be green color filter, the 3rd color filter layer can be blue color filter, but be not limited thereto, the first color filter layer, the second color filter layer and the 3rd color filter layer can be replaced mutually.
In addition, many gate lines G L of present embodiment
EL, many data line DL
EL, many power leads 118, a plurality of second switch element 120, a plurality of driving element 122, a plurality of EL part 124 and a plurality of reflecting bodys 126 are between first substrate 104 and liquid crystal layer 108.Gate lines G L
ELWith data line DL
ELBe arranged on first substrate 104 and mutually orthogonal roughly, and corresponding to the position, boundary in neighbor district 102.Power lead 118 is arranged on first substrate 104, and with data line DL
ELRoughly parallel to each other and corresponding to the position, boundary in neighbor district 102, in order to drive EL part 124, in addition, power lead 118 can electrically connect with common lines 110, can be simpler in the design of semi-penetration semi-reflection type display panel 100.Each second switch element 120 is arranged at respectively on first substrate 104 in each pixel region 102, and in same pixel region 102, the grid of second switch element 120 and corresponding gate lines G L
ELElectrically connect, the source electrode of second switch element 120 then with corresponding data line DL
ELElectrically connect, to come control data line DL by second switch element 120
ELSignal input whether.Each driving element 122 is arranged at respectively on first substrate 104 in each pixel region 102, and the drain electrode of the grid of driving element 122 and corresponding second switch element 120 electrically connects, and the source electrode of driving element 122 and 118 electric connections of corresponding power lead.The second switch element 120 and the driving element 122 of present embodiment is positioned at the pixel region 102 beyond echo area 102R and the penetrating region 102T, for example can be positioned at circuit region, but not as limit, second switch element and driving element also can be in the 102R of echo area or in the penetrating region 102T between EL part 124 and first substrate 104.In addition, each EL part 124 is arranged on first substrate 104 in the penetrating region 102T of each pixel region 102, and each EL part 124 comprises anode 128, luminescent layer 130 and negative electrode 132, wherein in each pixel region 102, anode 128, luminescent layer 130 and negative electrode 132 are located on first substrate 104 of penetrating region 102T in regular turn, and anode 128 is electrically connected to the drain electrode of the driving element 122 in the same pixel region 102, yet, the viewable design demand, exchange the position of anode 128 and negative electrode 132, but not as limit.And negative electrode 132 that it should be noted that present embodiment is electrically connected to corresponding common lines 110, makes the rotation of the liquid crystal molecule of the therebetween liquid crystal layer 108 of transparency electrode 114 and negative electrode 132 may command.And, in each pixel region 102, form storage capacitors 134 between the grid of the drain electrode of second switch element 120 or driving element 122 and the power lead 118, in order to storage data line DL
ELSignal.According to above-mentioned electrical connection, the switch controls data line DL of second switch element 120
ELSignal whether import, and the switch controls power lead 118 of driving element 122 input current whether is to drive EL part 124.Storage capacitors 134 can effectively be slowed down the speed of switch drive element 122, and the electric current that power lead 118 is provided has enough time driving EL parts 124.EL part 124 can comprise a plurality of first EL parts, a plurality of second EL part and a plurality of the 3rd EL part, wherein first EL part, second EL part and the 3rd EL part can be respectively the light-emitting component of solid color, for example: red light-emitting component, green luminousing element and blue light emitting device, and first EL part, second EL part and the 3rd EL part can constitute white, show the picture of full color so that semi-penetration semi-reflection type display panel 100 to be provided.It is roughly the same to it should be noted that light color that each EL part 124 of being arranged in penetrating region 102T is sent needs with the color of the chromatic filter layer 116 of same pixel region 102, makes the shown color of same pixel identical.Wherein, luminescent layer 130 can be made of the organic electric-excitation luminescent material, and uses the generation materials of different colors corresponding to the EL part 124 of different colours.Anode 128 is made of the material with high reflectance, for example: aluminium, silver, gold, nickel, platinum or above-mentioned combination etc., reflect towards the external world with the light that luminescent layer 130 is produced.Negative electrode 132 is made of the material with high penetration, and for example: the metallic film that thickness is little, the penetrable negative electrode 132 of the light that luminescent layer 130 is produced penetrates towards the external world.
In addition, each reflecting body 126 is arranged at respectively on first substrate 104 of each echo area 102R, and reflecting body 126 is made of the material with high reflectance, for example: metallic film etc., in order to the light of reflect ambient light incident semi-penetration semi-reflection type display panel 100.In the present embodiment, negative electrode 132 extends in the 102R of echo area and is covered on the reflecting body 126, but the present invention is not limited to this.Please refer to Fig. 4, Fig. 4 is the diagrammatic cross-section of another embodiment of the semi-penetration semi-reflection type display panel of first preferred embodiment.As shown in Figure 4, negative electrode 132 does not extend among the 102R of echo area, only electrically connects with reflecting body 126, and in this embodiment, and reflecting body 126 is made of conductive material, with as one of electrode of controlling liquid crystal layer 108 among the 102R of echo area.
Please continue with reference to figure 3, semi-penetration semi-reflection type display panel 100 comprises a plurality of projections 136 in addition, be arranged on first substrate 104 and be located at respectively in each echo area 102R, wherein projection 136 can be organic material and has convex-concave surface, reflecting body 126 also has convex-concave surface whereby, in order to even scattering environments light source, and can control the size in the liquid crystal gap in the 102R of echo area by the thickness of adjusting projection 136.
In addition, the semi-penetration semi-reflection type display panel 100 of present embodiment comprises two alignment films 138,140 in addition, be arranged between the liquid crystal layer 108 and first substrate 104 respectively and between the liquid crystal layer 108 and second substrate 106, carry out orientation in order to liquid crystal molecule to liquid crystal layer 108.And semi-penetration semi-reflection type display panel 100 comprises a plurality of protrusions 142 in addition, be located at respectively in each echo area 102R, and each protrusion 142 is located between each transparency electrode 114 and the liquid crystal layer 108 and is positioned at alignment film 140 side in the face of liquid crystal layer 108.In addition, semi-penetration semi-reflection type display panel 100 comprises a quarter-wave plate 144 and a polaroid 146 in addition, wherein quarter-wave plate 144 is arranged at the opposite side of second substrate 106 in the face of first substrate 104, and polaroid 146 is arranged on the quarter-wave plate 144.
Hence one can see that, on first substrate 104 of present embodiment in pixel region 102 gate lines G L is set
EL, data line DL
EL, power lead 118, second switch element 120 and driving element 122, and in the penetrating region 102T of pixel region 102, EL part 124 is set, in penetrating region 102T, to form electroluminescence panel.In addition, second substrate 106 of present embodiment while in pixel region 102 is provided with gate lines G L in the face of a side of first substrate 104
LCD, data line DL
LCD, common lines 110, first on-off element 112 and transparency electrode 114, and electrically connect the negative electrode 132 of common lines 110 and EL part 124, make the liquid crystal layer 108 that is positioned at 106 of first substrate 104 and second substrates be able to be ordered about rotation, by being provided with on first substrate 104 in the 102R of echo area on projection 136 and reflecting body 126 and second substrate 106 in the 102R of echo area chromatic filter layer 116 is set again, above electroluminescence panel, to form semi-penetrate through and semi-reflection-type liquid crystal display board.Therefore, present embodiment not only has electroluminescence panel display frame, more there is semi-penetrate through and semi-reflection-type liquid crystal display board can utilize the brightness of surround lighting to strengthen the display brightness of semi-penetration semi-reflection type display panel 100, with the problem of the known electric exciting light emitting display panel of effective improvement contrast deficiency that produced when the brightness of surround lighting is excessive.
The operational circumstances of the semi-penetration semi-reflection type display panel 100 of present embodiment will be described below, when semi-penetration semi-reflection type display panel 100 is in bright attitude, when promptly desire shows bright picture, in penetrating region 102T, EL part 124 is driven and produces the light with deflection polarity, therefore can penetrate liquid crystal layer 108, quarter-wave plate 144 and polaroid 146 in regular turn, offer the beholder and watch and demonstrate bright picture in penetrating region 102T.Simultaneously, in the 102R of echo area, provide a voltage difference between the negative electrode 132 of transparency electrode 114 and EL part 124, to rotate the liquid crystal molecule in the liquid crystal layer 108.At this moment, liquid crystal layer 108 has the quarter-wave characteristic of the light of delay.When the surround lighting that is incident to echo area 102R penetrated polaroid 146, quarter-wave plate 144 and liquid crystal layer 108 in regular turn, surround lighting can become the light with line polarization.Then, have the light of line polarization, and the light with line polarization can penetrate liquid crystal layer 108, quarter-wave plate 144 and polaroid 146 in regular turn and demonstrates bright picture and watch to the beholder by reflecting body 126 reflection.Therefore, under bright attitude, even when the brightness of surround lighting is big, the display panels that present embodiment is positioned at echo area 102R can utilize the luminance compensation of surround lighting when showing, thereby can avoid the contrast of semi-penetration semi-reflection type display panel 100 when environmental light brightness is excessive to be affected.In addition, when semi-penetration semi-reflection type display panel 100 is in dark attitude, when promptly desire shows dark picture, EL part 124 is not driven and the dull thread generation, and do not provide voltage difference between the negative electrode 132 of transparency electrode 114 and motor light-emitting component 124, so liquid crystal layer 108 is in rotation status not and does not have the characteristic that postpones light.At this moment, in penetrating region 102T and echo area 102R, surround lighting penetrates polaroid 146 and quarter-wave plate 144 in regular turn, and has dextrorotation/left-handed round polarization.After passing through the reflection of reflecting body 126 again, the light of left-handed/dextrorotation circle polarization that the light of dextrorotation/left-handed round polarization can change into, so after light passes through quarter-wave plate 144, and can't penetrate polaroid 146, and produce dark attitude.Therefore, semi-penetration semi-reflection type display panel 100 also can provide good dark picture to watch to the beholder, and then watches under the high light environment and can have good contrast.
In addition, the chromatic filter layer of semi-penetration semi-reflection type display panel of the present invention is not only limit and is located in the echo area, and also can be arranged at simultaneously in echo area and the penetrating region.Please refer to Fig. 5, Fig. 5 is the diagrammatic cross-section of the semi-penetration semi-reflection type display panel of the present invention's second preferred embodiment.The also clear for the purpose of simplifying the description relatively similarities and differences of various embodiments of the present invention, components identical symbol mark components identical is used in second preferred embodiment hereinafter described and aforementioned first preferred embodiment, and no longer identical portion of element is repeated to give unnecessary details.As shown in Figure 5, compared to first preferred embodiment, each chromatic filter layer 202 of the semi-penetration semi-reflection type display panel 200 of present embodiment is arranged at respectively in each echo area 102R and each the penetrating region 102T.By chromatic filter layer 202 is arranged in the penetrating region 102T, the light that EL part 124 is sent can make the shown color of same pixel have consistance through the purifying of chromatic filter layer 202.In addition, in the present embodiment, EL part 124 also can be white-light luminescent component except can be monochromatic light-emitting component, and for example: its luminescent layer is that red light luminescent layer, green luminescence layer and blue light-emitting pile up multiple luminescent layer that forms etc.
In sum, the present invention forms electroluminescence panel on first substrate of penetrating region, and by the negative electrode that chromatic filter layer is set and electrically connects common lines and EL part on projection and reflecting body, second substrate in pixel region is set on first substrate in the echo area, above electroluminescence panel, to form semi-penetrate through and semi-reflection-type liquid crystal display board.Therefore, present embodiment not only has electroluminescence panel display frame, more there is semi-penetrate through and semi-reflection-type liquid crystal display board can utilize the brightness of surround lighting to strengthen the display brightness of semi-penetration semi-reflection type display panel, with the problem of the known electric exciting light emitting display panel of effective improvement contrast deficiency that produced when the brightness of surround lighting is excessive.
Certainly; the present invention also can have other various embodiments; under the situation that does not deviate from spirit of the present invention and essence thereof; those of ordinary skill in the art work as can make various corresponding changes and distortion according to the present invention, but these corresponding changes and distortion all should belong to the protection domain of the appended claim of the present invention.