EP1374211A2

EP1374211A2 - Display

Info

Publication number: EP1374211A2
Application number: EP02706644A
Authority: EP
Inventors: Markus Hermsen
Original assignee: Siemens AG
Current assignee: Palm Inc
Priority date: 2001-02-13
Filing date: 2002-01-29
Publication date: 2004-01-02
Also published as: CN1650338A; WO2002065439A2; WO2002065439A3; KR20030075189A; DE10106587A1; US20040075045A1; JP2004518181A

Abstract

Disclosed is a display, comprising a display illuminating device and means for controlling the display illuminating device according to the light intensity of luminous radiation occurring on said display, determined by means of a light-sensitive element. The light-sensitive measuring element is directly integrated into the display, i.e. integrated into a COG display controller or COG display driver stage.

Description

description

display

The invention relates to a display with a Displaybeleuch ^¬ processing device and means for controlling the backlight means in response to a detected by means of a light-sensitive element luminous intensity of a light radiation occurring on the display. In addition, the invention relates to a device with such a display and a method for operating a corresponding display.

Most of the displays used today, for example displays in mobile radio devices, pagers, organizers or other terminals, have a display lighting device. In the case of self-illuminating types of displays, for example LED (light-emitting diodes), OLED (Organic Light Emitting Diode) or CRT (Cathode Ray Tube) displays, this display lighting device consists in the fact that the display elements or the display area itself actively emit light (self-illuminating displays ). In many cases, such as reflective LCDs, LCD displays (liquid crystal displays) are equipped with an additional lighting source in order to be able to be used even in dark surroundings, or use a lighting device to make the actual display elements readable at all (transmissive LCDs) ). Active brightness control is necessary for displays of the self-illuminating type. Otherwise, these displays would always have to be operated at the full brightness level in order to remain legible even in a very bright environment, for example in direct sunlight. In a relatively dark environment, however, the display would appear much too bright to be read comfortably. Also for displays of the reflective, trans issive or transreflective type there are advantages of actively controlling the additional light source depending on the ambient light. Without such a control, the access would have to be c) tv> ⁾ -> P ¹

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1 Φ 1 1 Φ Hi

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P- PP ιp rt tr P p: iP cn P- rt cn P- cn o rt PFP cn PP F- OF ¹ fl P Fi FP P- cn tr F- P φ FF 13 N 13 Φ tr N 13 F- rt Ω NP 13 ^ Dd X Ω α φ cn PJ P- rt Φ PF for F- F "φ P ¹ F- rt rt P- FS Φ tr Φ PF ¹ P φ PP Φ rt F ¹ P- PJ P- rt P Φ Φ P P- P- P cn 3 cn Φ POPF <! P- φ cn LP P tr P F- P P-

F- rt LP P "» P F * P Ω> <X rt P N cn P O Φ cn rt * N Φ cn p: LP P

3 Φ Φ P- Φ F- rt φ tr Φ σ p: Φ Φ for PPP P- Φ • LP §: F ¹ rt cn φ

F- F rt OX tr P 3 Φ Φ P- F- F t P- cn Φ iP φ cn F ¹ • Φ cn ^ F

-3 PPP ⁾ H P- o <5 P cn cn for PP cn P- F "cn Cd P 3 P F- F- φ φ PJ P Φ P- Φ X o tr P ¹ rt φ 13 Φ F ¹ φ Φ F- P φ F- P φ cn α Φ P ιP F tr cn P rt Φ Hi F P- Φ F- φ F Φ Φ P tr 3 cn PPF Ω OP F- P- P P- Φ P- Φ

Φ F- cn OP cn PF ¹ NJ F- p: 3 P <1 F "P cn tr O P- 3 P cn rt ω

PP, F 3 cn Φ Ω P o rt P- Φ φ CΛ Φ N Cd rt Ώ \ P 13 P- CΛ P- o rt P- Φ H 3 φ ö PP LP FP rt rt F F- rt cn FP Φ cn 1 o> P- H cn P- Ω PP

F ¹ LP PPJ tr> P- Φ cn NP _^ F- P rt PO tr P P- Φ öd P- PPO φ tr tr a

P- F- rt rt F P cn P- X P LP Φ P P Φ P P φ φ P P φ Hi P- *. P Φ Φ

Ω rt Φ F- cn 13 P- P- φ iP Φ <! P- rt Ω F P- P- ty Ω cn P F rt F- LP N O: rt F F

PPPFO Cd LP P ¹ LP F- F- rt P φ P Φ tr Φ PP tr fr P- φ F φ P "P Hi N cn

Φ \ -> cn Hi P F- PP P- Φ ω Φ F φ iP F ¹ F "F cn φ P rt tr PP Φ Hi cn Φ

P Φ Hi P ri ^¬ P • <rt Φ P P- tr FF p: Φ cn PP F- φ Φ ιp O: cn P- P Ω P- fr

P (__: Ω for LP cn P 3 φ P F- cn 3 & Φ • LP J 3 F- Φ Hi PP tr P op P Φ P ll: ¹ cn F- F-> 3 PW Φ cn φ P F- cn Φ Φ P Hi PPP P- Hi cn

3 s; F P P ω Φ Φ r P P P- P F F- P P P H 3 P P P- P P P P Ω P rt

Φ P N P Hi P- p- P rt cn ö φ P rt LP rt φ cn σ cn F- rt Φ P- P Fi P- tr Ω φ

Φ FPP ¹ PP Φ P- Hi F- P 13 Φ tr cn F ¹ tr F rt Cd cn F Φ P rt φ P rt t P

P- rt LP LP p: O: P φ 2! F ¹ Φ p: cn rt P φ φ P tr Φ cn LP FFPP

P • cn Φ tr cn P Φ cn PP 13 X cn MF 3 cn Ω φ CΛ F Φ Φ P- P- P- p: φ tr L Φ P for FF φ rt F- F- φ O for P- Ω Φ F s Φ CΛ N rt P Φ PP

K φ F F P o rt P- o P P F Φ Ω cn Φ P P 13 P tr F- N rt Ω p Φ P P- cn Hi cn

> cn F- F- LP F- M Φ o P • <α P tr F- rt P- F F P Ω Φ P P 3 P P P P rt

F ω Hi P- P 13 p cn o LP cn Φ Φ rt P Φ o Hi rt tr PP P- Φ cn n F P- rt P 13 Hi φ gp cn rt PF cn P- o PFNN LP rt F ¹ Φ oo P

P ⁾ F- Φ P φ φ s; cn tr Φ P Φ • ω P Φ φ F ¹ F> tr rt F- N F- FQ LP Φ

CΛ P φ P ιp F- rt P Φ Φ φ Ω PP rt LP cn Φ PN cn F ¹ Ω P ¹ α F- 1 Φ P

Ω P- P ¹ α Φ P rt P cn P- fr F- LP cn Φ Φ tr cn Ω X Φ P- P tr F- P Ω Dd cn tr Φ X P- s φ Φ P- cn tr ω Φ P F- PO Φ Φ F- ^ ~ • cn Φ Ω rt Ω Φ tr P o

P>

Φ φ cn P φ X cn 13 F P- rt 'F P- cn LP F fr cn tr rt rt P F P

F- rt FF 13 P CΛ F ¹ Φ rt F- φ Φ F- Hi P- HP P- fr P Φ Φ rt tn ω i cn rt N P- P- Φ rt F * φ tr 3 cn p: P cn <P F- PP φ P cn P cn cn Φ P * rt Hi

Φ Φ Φ P Φ LP P • rt P- Φ F Φ Φ P Ω P- cn P- ιp cn rt P- P Φ. p:

"• F P-». PP ^> <: F "F- cn Φ φ P ¹ Q rt F P- tr \ P 3 F- FP cn 3 P

Ω LP • Ω rt rt o ö cn F- XN Φ Φ M P- Φ X \ o φ Φ F- rt P P- F- Φ P- F tr rt o PFPP F- PF F- P φ o Φ P- F- P rt P- tr rt PPP

P- Cd PXF "Φ cn Φ φ F LP F- p: φ Φ P P- P- φ Ω N rt rt <i F ¹ P- rt cn P

Φ P- Φ rt P- Φ F- F P- φ ιP rt 3 φ P F tr P cn Φ Φ P <! cn cn LP

F P> P F- FFP tr 3 H Fi F ¹ Φ φ s PPF φ rt ω 13 P ¹ PPP Φ cn tr cn O P- HF φ F- F- P- p: P- cn P φ PPF cn p: F cn LP cn Φ P- Hi

O Φ Φ F ¹ • P F- F- rt P F- LP Ω "* • rt cn cn LP P- o φ rt Φ S cn S F- F- o tr P- S F- Hi Ω Ö> rt FF rt P cn O Φ 3 PPN Ω φ Φ P- φ P φ F

Φ Φ P Φ OP rt Φ F- Φ s; for PP Φ cn o cn ¹ tr P- cn P cn φ cn cn 3

F tr φ FPF rt _* P ¹ Ω for XN Φ PP cn F- P- P- F- F- φ P cn F P- cn Φ

P Φ cn 3 Hi 3 P rt P rt φ Ξ P LP rt P td F- φ rt Ω P φ Φ Ω φ Φ O: P-. J P- φ PPP Φ Φ rt F Φ Ω P Φ Φ P Fi F F- tr P- cn F ¹ tr F ¹ Hi F "φ

\ -> cn F "XP P- rt P ω P F- P- F- p- P- P cn F- F- <1 Φ Φ Φ P Φ Hi F- F tr 13 Φ φ P- F- F- P ¹ PP Φ Φ tr Φ tr N ts: Φ PF ü - 3 P- 3 3 P Ω

F 3 P- φ O P X F- LP P N cn φ F P O F- Φ F Φ P Φ P tr M

Φ Φ Φ rt P- ω P P F- Ω • P F- P tr Φ Φ rt Cd ^ Cd P P cn α P P rt F

P- P Φ Φ φ Hi F P P- P 1 1 tr P F- F P F> o Φ Ω rt P- rt LP P 1 1 cn rt 1 cn 1 P- rt P cn α

P φ Φ 1 1 P "φ cn 1 for cn P 1 1 1 1 cn 1 1 1 1 1 1 1 1

co CO K. r F ¹ F ¹

Cn o Cn o Cn O Cn

CO co r MF ¹

Cn o cn o Cn O cn

P- P- ö rt Dd cn M cn P- NH Dd P- P- F ¹ P tr Φ Hi P φ P- F- P Φ p- & r Φ Φ P Hi PPPP Φ P- Φ P- F "

P φ 3 P F- rt N Φ F- cn Hi Ω P P <P P F- P Φ F "

Ω PP F- Φ PP cn Φ fr fr Φ Ω rt φ fr Φ tr s P P- <i F- cn bd φ ^ F ¹ F ¹ P "F tr Φ P- cn rt 3 rt φ P 13 Φ Φ LP o PP tr et P- Φ Φ cn rt P Φ F-

P cn LPP Φ F ¹ Ω Φ φ LP P F- PP ω <tr

P cn P- Cd Φ g cn fT P P π O P tr Φ O Φ Φ

LP Φ P- cn 3 F> PF ¹ LP rt d PP iP φ P LP P- cn P- φ F- φ Φ Φ S- P- F- F- φ PPF "Φ -3 φ P cn Φ F- 3 3 F- LP cn F LP P fr .--— _^ P- φ P- P Φ ö

F- F F cn φ φ tr Φ P rt P F- fr rt P P P- P F- F-

P P- P ¹ Φ rt PP Φ rt • P- Φ rt φ o F Ω φ P ω cn

F Ω F- P Φ rt rt F- α cn Φ F- φ P Ω P P φ 13

F- tr Ω P- P Φ g Cd Ω P X rt P rt α rt

Ω rt tr P- cn iP P- Φ P tr • Φ F Φ P- Φ PP tr P rt tr Cd cn tr Φ φ F- P- PFP P- rt ω PF • <rt P φ Φ F- rt N F - tr φ Hi cn -3 P «cn p- • 13 tr cn

P iP ω rt cn tr P tr rt Φ Φ rt Φ H φ

PF 13 F- cn PP ¹ P- Φ PPP F- Dd P Dd F- P ιp Φ 3 P- P rt LP F- φ tr FPP rt Φ • <P rt P

P- o-. Φ PP P- cn Ω cn Φ fT N <F F- tr Ω φ Hi cn P iP tr><fr φ Φ F ¹ P Φ P P- P Φ P Φ fr P ~ »

O Hi Φ cn rt F P F- rt P cn BL F P α F "

P F- P P- Ω Ω cn P F- tr P cn ω Φ Φ F- P P-

Φ Ω Ω X <tr tr rt α P P φ φ F- 3 F P LP P P-

F- tr tr P- rt rt p: F- P- P- _| -. O F- P Ω tr φ

P P- FN Φ cn F cn «F ¹ P_ cn F tr rt

LP cn F- P P- Φ P rt f 13 P P- Φ cn rt rt cn P-

Φ • <cn F- P- p: Φ F "P Hi PP F- F- P 4 P- P cn P rt P P- LP Φ FP Hi P cn <i LP P Φ rt Ω • P F- Φ P ^■ tr πd Φ Φ Φ LP tr tr

Φ tr Hi Φ Hi Φ φ cn F g P cn P cn Φ F- φ

F ¹ FHF ¹ σ • cn Φ rt 3 P -3 φ F ¹ P {- •

OP P- ö p: F- 3 3 iP for Dd p- α F- Φ rt P F- F- Ω cn Cd P φ rt F- F P- PP P- φ φ CΛ tr 13 P cn α F- tr Φ F ^{1 for} cn F Ω P 3

X N Φ cn 13 φ F- Ω cn P- Φ P P P 13 F- tr P φ p F Φ H P fr cn cn P φ P Ω rt fr

FPPP p << F ¹ 13 lP P cn LP P tr Φ 3

P- F -3 ^ g cn F- P ¹ P- cn P ^ rt rt Φ LP

Φ H rt Φ tr cn LP tr PPF ¹ P- cn cn PF Φ

PP F- F- Φ o P- tr Φ ^■ <: N lj. «Rt Φ P s: tr

LP ω P- et F P Ω tr P F Hi LP (D CJ P rt Φ Φ φ cn Φ cn p: tr Φ rt F- F 3 P

P- P P rt tr tr rt -> rt P P P- P- LP LP

P P- φ Ω p: Cd F- φ Φ n P- P Φ Φ cn cn Φ ^ P- tr F Φ F- FPP Φ α Φ cn P tr F ¹ cn F p: P rt p tr cn P P- 1 rt " _* P F-

F "φ P Φ φ φ Dd P cn P- d P csα öd P Ω

F- σ PFPF φ PP cn φ tr P- P- ιp tr g F- Φ φ LP Ω P 13 cn. PF ^J Φ P ¹ P rt

P cn P p- cn cn tr LP P rt F- P fr tr P- F- cn

Φ 13 Φ 3

P Φ rt F rt Ω cn rt Φ φ F- P

F - • for Hi F- F- P O: N P tr Φ F- P P- tr rt P

P P P P P & - P P- tP φ o φ rt Hi

LP "≤ P Ω F *» LP Φ P Ω N rt φ F P F- Φ

Φ tr PP F- F LP tr F- P * _* F- ö- F ¹ F

P Φ Φ Ω 1-1. α rt φ P Öd rt cn Φ

P 1 P φ Φ n φ Φ 1 P 1 F 1

then the light intensity is measured when the Displaybeleuch ^¬ processing device is straight.

Another simple exemplary embodiment for implementing the measuring device at a pulsating working display illumination device is that the measuring device has a filter device which filters out the play generated by the lighting device Dis ^¬ proportion of the light intensity detected value. For example, a low-pass filter is sufficient for the filter device, since the ambient light essentially generates a direct current signal at the measuring element and the artificial light from the pulsating display lighting device is superimposed on this signal as an HF signal.

The invention is explained below with reference to the accompanying drawings using an exemplary embodiment. They represent:

Figure 1 is a schematic plan view of an LCD display with a COG line driver and a COG column driver.

2 shows a schematic section through the display according to FIG. 1 along the section line A-A ".

The display 1, which is shown roughly schematically in the figures, is a conventional LCD 1. This LCD 1 has a first display glass 4, as seen from the view side of a user, and a second display glass 5 located underneath.

Strips β, 7 made of conductive material, here transparent ITO (indium titanium oxide), are applied to the glasses 4, 5 on the sides facing one another. These are in each case a plurality of strips 6, 7 applied parallel to one another on the glasses 4, 5. The orientation on the two display glasses 4, 5 is selected such that the strips 6, 7 of the two display glasses 4, 5 lower O co N> ro P ¹ P ¹

Cn o π o cn o Cπ

CO O IV ⁾ ro ¹ P>

Cn o Cπ o Cπ o Cn ω ω π P- α CΛ Fi F ö P P- P- P> Cd tr <o tr tr P- cn iP Cd cn cn CΛ tSJ H P- P-

F- Φ φ o P F- P- P- P P- P P P P P P ro P ro tr P- Φ Φ F- Ω P 'P- F- Ω Ω Φ P Φ P

Ω P cn QF cn φ p: P φ rt PF P- Hi P P- PF Φ P> Hi P ro tr P φ P tr tr P- Ω cn tr cn Ω 13 F Ω P cn N φ ιp tr P- LP PF α F- P- cn F- ω F- P- P ¹ πd fr rt P- d-- ω PP ^J PP ω Φ rt F Φ ≤ P φ P- ω P- cn Φ P φ ro Ω ro ts. Ω Ω Φ p- rt Q cn rt PPP φ tr cn P cn F- PF "φ F ¹ P rt PF tr cn φ r tr P Φ φ P- tr ro" LP φ s: P rt F cn 3 F- P - Φ P- Φ P rt P- rt rt rt P tr

P <l P- LP P- LP P- F- F- H Φ P- P- p: Ω ro φ rt P- CΛ φ \ -> P- FF p: ω Φ P ¹ ro P P-> Φ ω P- F tr cn tr N tr FPP Ω Ω P φ Φ P ¹ X Φ P

F- P- P * ro P o F 13 Ω P- P- rt Φ rt rt P CΛ P tr XP CO φ F- ro CΛ rt Cd φ ro P cn p- tr rt P P- P- L CΛ P- rt F- P ¹ φ cn P- P- tr Φ

P- rt P- tr CΛ φ rt Φ P Hi Ω P, ro Ω Ω cn Ω ro F rt φ P CΛ Φ F-

<i φ rt P J-- P Ω cn p cn P ro p: P Φ F- P- tr tr rt P α F P P rt F CΛ P-

Φ 3 cn ro F- rt P Φ p P F F Φ P ro P F- F rt LP Φ Φ Hi cn rt φ

P φ O rt Ω Hi P- P- P o P- P rt cn Φ Ω N P Φ Φ P P- φ P- ω

P 3 tr P P o F- cn P- P P- α F Λ cn cn tr s: tr P Hi Hi F- F- CO LP

M rr F- X rt {- • P tr F P- F- F- tr ro P o Φ Ω rt F- p: N Φ LP P Φ P F Q

F ¹ rt P- P "rt Φ rt Φ 13 ro F cn o F- tr P- n φ ω P F> tr PP Φ P CΛ O Φ

Φ tO F φ Φ P- φ fr F- cn cn Q tr F- P tr P Ω P ro F P Hi Φ P tr F

3 • Φ P- P P- P rt <! P Ω et M 1 Φ Ω F p- r P rt σi rt F P p:

Φ F- rt P- φ Φ F- ro tr tr F tsi F tr Ω 13 P ¹ Φ F ¹ • & F ¹ P- cn cn rt

P Cd P φ φ cn p> P Ω F- F ro Hi Φ rt P cn ro P CΛ F- CΛ P F- Φ n Ω cn rt P- Φ α F cn φ ISO PM tr P F- F F- P - CO ro • rt Ω ü Ω POF oi tr

Φ P Φ F {- • rt ro cn PP ¹ PP P- φ P- O: tr P tr Hi PQ F- φ cn φ LP FNP ¹ P P- Φ Cn tr P- P- φ P ö P- Φ F rt F ¹ φ P- 1 3 X

FP P- CΛ P Φ 3 r F- ro Ω PP fr P> ω F- P 3 P Φ α P- P F- NPP ro r Cd O cn Ω rr iP F φ p: Ω P tr P rt P ro Φ φ P 3 F- cn φ Φ Φ F rt φ ö- F- P- tr Φ ro PFP ^J • rt iP FP ü cn σ LP 13 Φ cn F n F- F- Ω

P- φ Φ Ω ro rt i—> o ts. rt fT rt P ¹ cn Φ P ro F- Φ P F- Φ Hi ro P w F "P ¹ ω tr

P P- tr 3 F P Φ cn -3 P- 13 F- F cn F- cn P F- Φ P F- P Φ Ω Φ

FPM rt Φ P- 3 IV ⁾ Φ ro Ω F tr ro F 13 P Ω 13 P F- P 13 P P- tr cn

Ω rt tr F ¹ PPPP cn P F- Φ ω ro p- tr tr P F- rt tr rt P tr F 13 P F- F Φ ro Ö F- P cn ro KPF F- P Ω rt P Φ F ¹ NP Φ tr F ¹ FF P- P- p: Hi F Ω Ω F- rt F- CΛ Hl F- P Φ N cn Ω • tr cn><F F- Φ PF F- Φ Φ LP Φ P

Φ Ω P φ tr tr P • cn rt rt rt F- P- tr P- tr rt Ω LP <J Ω F ¹ ro CΛ F- F- Φ F cn

F- tr P rt 13 P- P- rt 13 P Ω rt F "ω tr F ¹ o tr PF Φ P- rt tr cn

P rt ιp Cd cn P- ö F ¹ P- Φ <! F- P tr • P Ω PPF Φ tr F- φ Φ Φ rt CΛ ö φ F- cn φ Φ PO F- P 3 3 Φ Ω s: P P. cn rt cn LP cn rt p PPPFF CD Ω F-

Hi FP cn Ω ro> CΛ tr Φ P φ PN Φ P- F ¹ Φ Cn F ¹ tr cn

<; PF "φ cn tr LP P- σ LP F ¹ g *> rt 3 αι> FP w tr Ω OF ¹ F- 13

P p: F- F- α PF ¹ P P- M F- φ cn PN φ P P- P P- tr P rt Ω P ¹

F LP Ω Ω rt P- P ¹ P- PF cn F ¹ CΛ P F- • ro Φ 3 rt P Hi F "P- ro F- • tr P cn tr tr P- cn P * Ω cn LP 13 Φ rt Ω P- F- Φ PP ro P tr P- cn Ω φ rt •

Ω P- Φ <! 13 ^• »tr Φ P" 3 PP α PP rt P ¹ P- PPP ¹ Φ tr F-> P

P Φ CD Φ rt .f-. cn P φ F- Φ ro Hi PH P- φ cn O rt PF "PP ¹

3 F Hi PP cn cn rt * P ro φ PFPPF ¹ F- P- X P- φ tr φ φ cn Hi

P p: "o Ω X Φ rt P- F F- P ¹ cn F- φ P- rt F ro P tr φ rt ^ F ro H tr Φ P ¹ , P- Ω tr F ¹ F- P- Φ FP ro F CΛ PPP

NP cn HP "P- P F- NJ LP P tr Φ ro Φ cn Φ cn P- FFK Φ P ¹ PPP rt

P P P- Φ P P rt cn rt N F "F- rt rt F P F- F φ φ Ω P P ro tr rt tr

P fr P ö 3 cn cn N Φ Φ P P- F- Ω P fr P- φ PPP tr P- CΛ Φ P- p: iP rt cn F- φ cn 3 PPP Ω tr X F- O: ro FPP tr ü P rt F Φ P- ¹

F- cn P u--. Φ P- 3 N tr rt φ g cn PP fr ro PF ¹ F- PF cn cn rt

F- O F- 13 rt P rt Φ φ P cn F "PP P- O: F- ro Φ cn Hl P rt cn P F- [- • XPPPP cn X φ P- g LP P> Φ PPF F- 13 LP rt φ O et Ω P ro P- Fi {- • cn cn LP P- Φ P Φ F- 3 o PP Hi tr rt F ¹ φ 1 o P

P ro F ¹ O Hi φ Φ P F- rt F Ω LP F ¹ φ PP Φ P tr tr ro rr LP F- P- F- tr PP 1 cn rt rt P 'ro o P o PF ¹ F ¹ F ^ <P 1 P cn 1 3 P 1 Φ tr cn Φ F- Φ ro 1 F "tr 1 tr 1 1 P Φ

P cn F 1 F Ω P cn F- rt 1 1 1 P 13

co co ιo t P ¹ P ¹

C I o Cπ o Cn o Cπ

O

Φ

F p: rt

Φ

cn

Φ

F tr

Φ tr

\ ->

P-

Ω tr

Φ

F tr

O: tr rt

X φ

F

P-

Φ

P fr

P

•

cn

Claims

claims

1. Display (1) with a display lighting device and means for controlling the display lighting device as a function of one using a light-sensitive element

(2) determined light intensity of a light radiation occurring on the display (1), characterized in that the light-sensitive measuring element (2) is integrated in the display (1).

2. Display according to claim 1, characterized in that the light-sensitive measuring element (2) is integrated in a component (3a) which is arranged on a display glass (4).

3. Display according to claim 2, characterized in that the component (3a) comprises an integrated circuit applied to the display glass (4).

4. Display according to claim 2 or 3, characterized in that the component (3a) arranged on the display glass (4) is shielded from incident light by means of an opaque protective layer (10) which has an opening (11) and the opening (11 ) and the light-sensitive measuring element (2) in the component (3a) are arranged so that the incident light radiation passes through the opening (11) to the light-sensitive measuring element (2).

5. Display according to one of claims 2 to 4, characterized in that the component (3a) comprises a display controller and / or a display driver stage (3a).

6. Display according to one of claims 1 to 5, characterized by a measuring device which determines an ambient light intensity occurring on the display by means of the light-sensitive measuring element.

7. Display according to claim 6, characterized in that the display lighting device operates in a pulsating manner and the measuring device has a filter device which filters out the portion of the light intensity determined by means of the light-sensitive measuring element that is generated by the display lighting device.

8. Display according to claim 6, characterized in that the display lighting device works intermittently and the measuring device has means to determine the light intensity by means of the sensitive measuring element only when the display lighting device does not generate any light.

9. Display according to one of claims 1 to 8, characterized in that the measuring element determines a digital value or that a device is integrated in the display which converts the light intensity determined by means of the measuring element into a digital value.

10. Device with a display according to one of claims 1 to 9.

11. Method for operating a display (1) with a display lighting device, wherein a light intensity of a light radiation occurring on the display (1) is determined and the display lighting device is controlled as a function of the light intensity determined, characterized in that the light intensity is determined by means of a the display (1) integrated light-sensitive measuring element (2) is determined.

12. The method according to claim 11, characterized in that an ambient light intensity occurring on the display is measured.

13. The method according to claim 12, characterized in that the display lighting device pulsates ar- processes and a portion of the determined light intensity generated by the display lighting device is filtered out.

14. The method according to claim 12, characterized in that the display lighting device works intermittently and the light intensity is only determined when the display lighting device does not generate any light.